Programme for International Student Assessment 2015
Argentina, Argentina, Australia...and 72 more, 2015
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Reference ID
WLD_2015_PISA_v01_M
Producer(s)
Organisation for Economic Co-operation and Development
Metadata
Created on
Dec 05, 2019
Last modified
Jun 14, 2022
Page views
127662
Downloads
1088
Stratum ID 7-character (cnt + region ID + original stratum ID) (STRATUM)
Data file: CY6_MS_CMB_STU_QQ2
Overview
Valid:
519334
Invalid:
0
Type:
Discrete
Start:
38
End:
44
Width:
7
Range:
-
Format:
character
Questions and instructions
Categories
| Value | Category |
|---|---|
| ALB0001 | ALB - stratum 01: Urban \ North \ Public |
| ALB0002 | ALB - stratum 02: Urban \ North \ Private |
| ALB0003 | ALB - stratum 03: Urban \ Center \ Public |
| ALB0004 | ALB - stratum 04: Urban \ Center \ Private |
| ALB0005 | ALB - stratum 05: Urban \ South \ Public |
| ALB0006 | ALB - stratum 06: Urban \ South \ Private |
| ALB0007 | ALB - stratum 07: Rural \ North \ Public |
| ALB0008 | ALB - stratum 08: Rural \ North \ Private |
| ALB0009 | ALB - stratum 09: Rural \ Center \ Public |
| ALB0010 | ALB - stratum 10: Rural \ Center \ Private |
| ALB0011 | ALB - stratum 11: Rural \ South \ Public |
| ALB0012 | ALB - stratum 12: Rural \ South \ Private |
| ALB9797 | Undisclosed STRATUM - Albania |
| ARE0101 | ARE - stratum 01: Abu Dhabi \ MoE \ Public |
| ARE0102 | ARE - stratum 02: Abu Dhabi \ MoE \ Private |
| ARE0104 | ARE - stratum 04: Abu Dhabi \ US \ Private |
| ARE0106 | ARE - stratum 06: Abu Dhabi \ UK \ Private |
| ARE0108 | ARE - stratum 08: Abu Dhabi \ Indian \ Private |
| ARE0109 | ARE - stratum 09: Abu Dhabi \ Other \ Public |
| ARE0110 | ARE - stratum 10: Abu Dhabi \ Other \ Private |
| ARE0211 | ARE - stratum 11: Dubai \ MoE \ Public |
| ARE0212 | ARE - stratum 12: Dubai \ MoE \ Private |
| ARE0214 | ARE - stratum 14: Dubai \ US \ Private |
| ARE0216 | ARE - stratum 16: Dubai \ UK \ Private |
| ARE0218 | ARE - stratum 18: Dubai \ Indian \ Private |
| ARE0219 | ARE - stratum 19: Dubai \ Other \ Public |
| ARE0220 | ARE - stratum 20: Dubai \ Other \ Private |
| ARE0321 | ARE - stratum 21: Sharjah \ MoE \ Public |
| ARE0322 | ARE - stratum 22: Sharjah \ MoE \ Private |
| ARE0324 | ARE - stratum 24: Sharjah \ US \ Private |
| ARE0326 | ARE - stratum 26: Sharjah \ UK \ Private |
| ARE0328 | ARE - stratum 28: Sharjah \ Indian \ Private |
| ARE0329 | ARE - stratum 29: Sharjah \ Other \ Public |
| ARE0330 | ARE - stratum 30: Sharjah \ Other \ Private |
| ARE0431 | ARE - stratum 31: Ajman \ MoE \ Public |
| ARE0432 | ARE - stratum 32: Ajman \ MoE \ Private |
| ARE0434 | ARE - stratum 34: Ajman \ US \ Private |
| ARE0438 | ARE - stratum 38: Ajman \ Indian \ Private |
| ARE0439 | ARE - stratum 39: Ajman \ Other \ Public |
| ARE0440 | ARE - stratum 40: Ajman \ Other \ Private |
| ARE0541 | ARE - stratum 41: Umm Al Quwain \ MoE \ Public |
| ARE0542 | ARE - stratum 42: Umm Al Quwain \ MoE \ Private |
| ARE0548 | ARE - stratum 48: Umm Al Quwain \ Indian \ Private |
| ARE0549 | ARE - stratum 49: Umm Al Quwain \ Other \ Public |
| ARE0651 | ARE - stratum 51: Ras Al Khaimah \ MoE \ Public |
| ARE0652 | ARE - stratum 52: Ras Al Khaimah \ MoE \ Private |
| ARE0654 | ARE - stratum 54: Ras Al Khaimah \ US \ Private |
| ARE0658 | ARE - stratum 58: Ras Al Khaimah \ Indian \ Private |
| ARE0659 | ARE - stratum 59: Ras Al Khaimah \ Other \ Public |
| ARE0660 | ARE - stratum 60: Ras Al Khaimah \ Other \ Private |
| ARE0761 | ARE - stratum 61: Fujairah \ MoE \ Public |
| ARE0762 | ARE - stratum 62: Fujairah \ MoE \ Private |
| ARE0766 | ARE - stratum 66: Fujairah \ UK \ Private |
| ARE0768 | ARE - stratum 68: Fujairah \ Indian \ Private |
| ARE0769 | ARE - stratum 69: Fujairah \ Other \ Public |
| ARE9797 | Undisclosed STRATUM - United Arab Emirates |
| ARG0002 | ARG - stratum 02: 02 (Centro) |
| ARG0003 | ARG - stratum 03: 03 (NEA) |
| ARG0004 | ARG - stratum 04: 04 (NOA) |
| ARG0005 | ARG - stratum 05: 05 (Cuyo) |
| ARG0006 | ARG - stratum 06: 06 (Patagonica) |
| ARG0101 | ARG - stratum 01: 01 (CABA) |
| ARG9797 | Undisclosed STRATUM - Argentina |
| AUS0101 | AUS - stratum 01: ACT-Catholic, Y10 |
| AUS0102 | AUS - stratum 02: ACT-Catholic, No Y10 |
| AUS0103 | AUS - stratum 03: ACT-Gov, Y10 |
| AUS0104 | AUS - stratum 04: ACT-Gov, No Y10 |
| AUS0105 | AUS - stratum 05: ACT-Ind, Y10 |
| AUS0207 | AUS - stratum 07: NSW-Catholic, Y10 |
| AUS0208 | AUS - stratum 08: NSW-Catholic, No Y10 |
| AUS0209 | AUS - stratum 09: NSW-Gov, Y10 |
| AUS0210 | AUS - stratum 10: NSW-Gov, No Y10 |
| AUS0211 | AUS - stratum 11: NSW-Ind, Y10 |
| AUS0212 | AUS - stratum 12: NSW-Ind, No Y10 |
| AUS0313 | AUS - stratum 13: VIC-Catholic, Y10 |
| AUS0314 | AUS - stratum 14: VIC-Catholic, No Y10 |
| AUS0315 | AUS - stratum 15: VIC-Gov, Y10 |
| AUS0316 | AUS - stratum 16: VIC-Gov, No Y10 |
| AUS0317 | AUS - stratum 17: VIC-Ind, Y10 |
| AUS0318 | AUS - stratum 18: VIC-Ind, No Y10 |
| AUS0419 | AUS - stratum 19: QLD-Catholic, Y10 |
| AUS0420 | AUS - stratum 20: QLD-Catholic, No Y10 |
| AUS0421 | AUS - stratum 21: QLD-Gov, Y10 |
| AUS0422 | AUS - stratum 22: QLD-Gov, No Y10 |
| AUS0423 | AUS - stratum 23: QLD-Ind, Y10 |
| AUS0424 | AUS - stratum 24: QLD-Ind, No Y10 |
| AUS0525 | AUS - stratum 25: SA-Catholic, Y10 |
| AUS0526 | AUS - stratum 26: SA-Catholic, NO Y10 |
| AUS0527 | AUS - stratum 27: SA-Gov, Y10 |
| AUS0528 | AUS - stratum 28: SA-Gov, No Y10 |
| AUS0529 | AUS - stratum 29: SA-Ind, Y10 |
| AUS0530 | AUS - stratum 30: SA-Ind, No Y10 |
| AUS0631 | AUS - stratum 31: WA-Catholic, Y10 |
| AUS0632 | AUS - stratum 32: WA-Catholic, No Y10 |
| AUS0633 | AUS - stratum 33: WA-Gov, Y10 |
| AUS0634 | AUS - stratum 34: WA-Gov, No Y10 |
| AUS0635 | AUS - stratum 35: WA-Ind, Y10 |
| AUS0636 | AUS - stratum 36: WA-Ind, No Y10 |
| AUS0737 | AUS - stratum 37: TAS-Catholic, Y10 |
| AUS0738 | AUS - stratum 38: TAS-Catholic, No Y10 |
| AUS0739 | AUS - stratum 39: TAS-Gov, Y10 |
| AUS0740 | AUS - stratum 40: TAS-Gov, No Y10 |
| AUS0741 | AUS - stratum 41: TAS-Ind, Y10 |
| AUS0742 | AUS - stratum 42: TAS-Ind, No Y10 |
| AUS0843 | AUS - stratum 43: NT-Catholic, Y10 |
| AUS0844 | AUS - stratum 44: NT-Catholic, No Y10 |
| AUS0845 | AUS - stratum 45: NT-Gov, Y10 |
| AUS0846 | AUS - stratum 46: NT-Gov, No Y10 |
| AUS0847 | AUS - stratum 47: NT-Ind, Y10 |
| AUS0848 | AUS - stratum 48: NT-Ind, No Y10 |
| AUS9797 | Undisclosed STRATUM - Australia |
| AUT0101 | AUT - stratum 01: RESTAUT \ TYPE 1 |
| AUT0102 | AUT - stratum 02: RESTAUT \ TYPE 2 |
| AUT0103 | AUT - stratum 03: RESTAUT \ TYPE 3 |
| AUT0104 | AUT - stratum 04: RESTAUT \ TYPE 4 |
| AUT0105 | AUT - stratum 05: RESTAUT \ TYPE 5 |
| AUT0106 | AUT - stratum 06: RESTAUT \ TYPE 6 |
| AUT0107 | AUT - stratum 07: RESTAUT \ TYPE 7 |
| AUT0108 | AUT - stratum 08: RESTAUT \ TYPE 8 |
| AUT0109 | AUT - stratum 09: RESTAUT \ TYPE 9 |
| AUT0110 | AUT - stratum 10: RESTAUT \ TYPE 10 |
| AUT0111 | AUT - stratum 11: RESTAUT \ TYPE 11 |
| AUT0112 | AUT - stratum 12: RESTAUT \ TYPE 12 |
| AUT0113 | AUT - stratum 13: RESTAUT \ TYPE 13 |
| AUT0114 | AUT - stratum 14: RESTAUT \ TYPE 14 |
| AUT0115 | AUT - stratum 15: RESTAUT \ TYPE 15 |
| AUT0116 | AUT - stratum 16: RESTAUT \ TYPE 16 |
| AUT0117 | AUT - stratum 17: RESTAUT \ TYPE 17 |
| AUT0218 | AUT - stratum 18: OBER \ TYPE A |
| AUT0219 | AUT - stratum 19: OBER \ TYPE B |
| AUT0220 | AUT - stratum 20: OBER \ TYPE C |
| AUT0221 | AUT - stratum 21: OBER \ TYPE D |
| AUT0222 | AUT - stratum 22: OBER \ TYPE E |
| AUT0223 | AUT - stratum 23: OBER \ TYPE F |
| AUT0224 | AUT - stratum 24: OBER \ TYPE G |
| AUT0225 | AUT - stratum 25: OBER \ TYPE H |
| AUT9797 | Undisclosed STRATUM - Austria |
| BEL001 | BEL - Stratum 1: Flanders\Gen Ed only |
| BEL002 | BEL - Stratum 2: Flanders\Gen Ed and other type |
| BEL003 | BEL - Stratum 3: Flanders\Tech or voc |
| BEL004 | BEL - Stratum 4: Flanders\Special Ed |
| BEL005 | BEL - Stratum 4: Flanders\add value labels STRATUM |
| BEL0101 | BEL - stratum 01: 01: Flanders\Gen Ed only\private subsidize |
| BEL0102 | BEL - stratum 02: 02: Flanders\Gen Ed only\private subsidize |
| BEL0103 | BEL - stratum 03: 03: Flanders\Gen Ed only\private subsidize |
| BEL0104 | BEL - stratum 04: 04: Flanders\Gen Ed only\network comm. Sch |
| BEL0105 | BEL - stratum 05: 05: Flanders\Gen Ed only\network comm. Sch |
| BEL0106 | BEL - stratum 06: 06: Flanders\Gen Ed only\network comm. Sch |
| BEL0107 | BEL - stratum 07: 07: Flanders\Gen Ed and other type\private |
| BEL0108 | BEL - stratum 08: 08: Flanders\Gen Ed and other type\private |
| BEL0109 | BEL - stratum 09: 09: Flanders\Gen Ed and other type\private |
| BEL0110 | BEL - stratum 10: 10: Flanders\Gen Ed and other type\network |
| BEL0111 | BEL - stratum 11: 11: Flanders\Gen Ed and other type\network |
| BEL0112 | BEL - stratum 12: 12: Flanders\Gen Ed and other type\network |
| BEL0113 | BEL - stratum 13: 13: Flanders\Tech or Voc\private subsidize |
| BEL0114 | BEL - stratum 14: 14: Flanders\Tech or Voc\private subsidize |
| BEL0115 | BEL - stratum 15: 15: Flanders\Tech or Voc\private subsidize |
| BEL0116 | BEL - stratum 16: 16: Flanders\Tech or Voc\network comm. Sch |
| BEL0117 | BEL - stratum 17: 17: Flanders\Tech or Voc\network comm. Sch |
| BEL0118 | BEL - stratum 18: 18: Flanders\Tech or Voc\network comm. Sch |
| BEL0119 | BEL - stratum 19: 19: Flanders\Special Ed\private subsidized |
| BEL0120 | BEL - stratum 20: 20: Flanders\Special Ed\network comm. schl |
| BEL0121 | BEL - stratum 21: 21: Flanders\Part-time Vocational Ed |
| BEL0222 | BEL - stratum 22: 22: French com\Regular\ISCED2 |
| BEL0223 | BEL - stratum 23: 23: French com\Regular\ISCED3\Academic onl |
| BEL0224 | BEL - stratum 24: 24: French com\Regular\ISCED3\Mixed |
| BEL0225 | BEL - stratum 25: 25: French com\Regular\ISCED3\Vocational o |
| BEL0226 | BEL - stratum 26: 26: French com\Regular\ Mixed ISCED\Academ |
| BEL0227 | BEL - stratum 27: 27: French com\Regular\ Mixed ISCED\Mixed |
| BEL0228 | BEL - stratum 28: 28: French com\Regular\ Mixed ISCED\Vocati |
| BEL0229 | BEL - stratum 29: 29: French com\Special Ed |
| BEL0230 | BEL - stratum 30: 30: French com\Part-time Vocational Ed |
| BEL0331 | BEL - stratum 31: 31: German com\Regular |
| BEL0332 | BEL - stratum 32: 32: German com\Special Ed |
| BEL9797 | Undisclosed STRATUM - Belgium |
| BGR0001 | BGR - stratum 01: Region 01 |
| BGR0002 | BGR - stratum 02: Region 02 |
| BGR0003 | BGR - stratum 03: Region 03 |
| BGR0004 | BGR - stratum 04: Region 04 |
| BGR0005 | BGR - stratum 05: Region 05 |
| BGR0006 | BGR - stratum 06: Region 06 |
| BGR0007 | BGR - stratum 07: Region 07 |
| BGR0008 | BGR - stratum 08: Region 08 |
| BGR0009 | BGR - stratum 09: Region 09 |
| BGR0010 | BGR - stratum 10: Region 10 |
| BGR0011 | BGR - stratum 11: Region 11 |
| BGR9797 | Undisclosed STRATUM - Bulgaria |
| BRA0101 | BRA - stratum 01: 1 ACRE\MODAL GRADE |
| BRA0102 | BRA - stratum 02: 2 ACRE\NO MODAL GRADE |
| BRA0203 | BRA - stratum 03: 3 ALAGOAS\MODAL GRADE |
| BRA0204 | BRA - stratum 04: 4 ALAGOAS\NO MODAL GRADE |
| BRA0305 | BRA - stratum 05: 5 AMAPÁ\MODAL GRADE |
| BRA0306 | BRA - stratum 06: 6 AMAPÁ\NO MODAL GRADE |
| BRA0407 | BRA - stratum 07: 7 AMAZONAS\MODAL GRADE |
| BRA0408 | BRA - stratum 08: 8 AMAZONAS\NO MODAL GRADE |
| BRA0509 | BRA - stratum 09: 9 BAHIA\MODAL GRADE |
| BRA0510 | BRA - stratum 10: 10 BAHIA\NO MODAL GRADE |
| BRA0611 | BRA - stratum 11: 11 CEARÁ\MODAL GRADE |
| BRA0612 | BRA - stratum 12: 12 CEARÁ\NO MODAL GRADE |
| BRA0713 | BRA - stratum 13: 13 DISTRITO FEDERAL\MODAL GRADE |
| BRA0714 | BRA - stratum 14: 14 DISTRITO FEDERAL\NO MODAL GRADE |
| BRA0815 | BRA - stratum 15: 15 ESPÍRITO SANTO\MODAL GRADE |
| BRA0816 | BRA - stratum 16: 16 ESPÍRITO SANTO\NO MODAL GRADE |
| BRA0917 | BRA - stratum 17: 17 GOIÁS\MODAL GRADE |
| BRA0918 | BRA - stratum 18: 18 GOIÁS\NO MODAL GRADE |
| BRA1019 | BRA - stratum 19: 19 MARANHÃO\MODAL GRADE |
| BRA1020 | BRA - stratum 20: 20 MARANHÃO\NO MODAL GRADE |
| BRA1121 | BRA - stratum 21: 21 MATO GROSSO\MODAL GRADE |
| BRA1122 | BRA - stratum 22: 22 MATO GROSSO\NO MODAL GRADE |
| BRA1223 | BRA - stratum 23: 23 MATO GROSSO DO SUL\MODAL GRADE |
| BRA1224 | BRA - stratum 24: 24 MATO GROSSO DO SUL\NO MODAL GRADE |
| BRA1325 | BRA - stratum 25: 25 MINAS GERAIS\MODAL GRADE |
| BRA1326 | BRA - stratum 26: 26 MINAS GERAIS\NO MODAL GRADE |
| BRA1427 | BRA - stratum 27: 27 PARÁ\MODAL GRADE |
| BRA1428 | BRA - stratum 28: 28 PARÁ\NO MODAL GRADE |
| BRA1529 | BRA - stratum 29: 29 PARAÍBA\MODAL GRADE |
| BRA1530 | BRA - stratum 30: 30 PARAÍBA\NO MODAL GRADE |
| BRA1631 | BRA - stratum 31: 31 PARANÁ\MODAL GRADE |
| BRA1632 | BRA - stratum 32: 32 PARANÁ\NO MODAL GRADE |
| BRA1733 | BRA - stratum 33: 33 PERNAMBUCO\MODAL GRADE |
| BRA1734 | BRA - stratum 34: 34 PERNAMBUCO\NO MODAL GRADE |
| BRA1835 | BRA - stratum 35: 35 PIAUÍ\MODAL GRADE |
| BRA1836 | BRA - stratum 36: 36 PIAUÍ\NO MODAL GRADE |
| BRA1937 | BRA - stratum 37: 37 RIO DE JANEIRO\MODAL GRADE |
| BRA1938 | BRA - stratum 38: 38 RIO DE JANEIRO\NO MODAL GRADE |
| BRA2039 | BRA - stratum 39: 39 RIO GRANDE DO NORTE\MODAL GRADE |
| BRA2040 | BRA - stratum 40: 40 RIO GRANDE DO NORTE\NO MODAL GRADE |
| BRA2141 | BRA - stratum 41: 41 RIO GRANDE DO SUL\MODAL GRADE |
| BRA2142 | BRA - stratum 42: 42 RIO GRANDE DO SUL\NO MODAL GRADE |
| BRA2243 | BRA - stratum 43: 43 RONDÔNIA\MODAL GRADE |
| BRA2244 | BRA - stratum 44: 44 RONDÔNIA\NO MODAL GRADE |
| BRA2345 | BRA - stratum 45: 45 RORAIMA\MODAL GRADE |
| BRA2346 | BRA - stratum 46: 46 RORAIMA\NO MODAL GRADE |
| BRA2447 | BRA - stratum 47: 47 SANTA CATARINA\MODAL GRADE |
| BRA2448 | BRA - stratum 48: 48 SANTA CATARINA\NO MODAL GRADE |
| BRA2549 | BRA - stratum 49: 49 SÃO PAULO\MODAL GRADE |
| BRA2550 | BRA - stratum 50: 50 SÃO PAULO\NO MODAL GRADE |
| BRA2651 | BRA - stratum 51: 51 SERGIPE\MODAL GRADE |
| BRA2652 | BRA - stratum 52: 52 SERGIPE\NO MODAL GRADE |
| BRA2753 | BRA - stratum 53: 53 TOCANTINS\MODAL GRADE |
| BRA2754 | BRA - stratum 54: 54 TOCANTINS\NO MODAL GRADE |
| BRA9797 | Undisclosed STRATUM - Brazil |
| CAN0101 | CAN - stratum 01: prov 10 Fr.& Eng. 0,1,2 |
| CAN0102 | CAN - stratum 02: prov 10 Fr.& Eng. 3 to 20 |
| CAN0103 | CAN - stratum 03: prov 10 Fr.& Eng. 21 to 41 |
| CAN0104 | CAN - stratum 04: prov 10 Fr.& Eng. 42 to … |
| CAN0211 | CAN - stratum 11: prov 11 Fr.& Eng. 0,1,2 |
| CAN0212 | CAN - stratum 12: prov 11 Fr.& Eng. 3 to 20 |
| CAN0213 | CAN - stratum 13: prov 11 Fr.& Eng. 21 to … |
| CAN0321 | CAN - stratum 21: prov 12 Eng. 0 to 20 |
| CAN0322 | CAN - stratum 22: prov 12 Eng. 21 to 41 |
| CAN0323 | CAN - stratum 23: prov 12 Eng. 42 to … |
| CAN0326 | CAN - stratum 26: prov 12 Fr. 3 to 20 |
| CAN0327 | CAN - stratum 27: prov 12 Fr. 21 to … |
| CAN0431 | CAN - stratum 31: prov 13 Eng. 0,1,2 |
| CAN0432 | CAN - stratum 32: prov 13 Eng. 3 to 41 |
| CAN0433 | CAN - stratum 33: prov 13 Eng. 42 to … |
| CAN0435 | CAN - stratum 35: prov 13 Fr. 0,1,2 |
| CAN0436 | CAN - stratum 36: prov 13 Fr. 3 to 41 |
| CAN0437 | CAN - stratum 37: prov 13 Fr. 42 to … |
| CAN0541 | CAN - stratum 41: prov 24 Eng. 0 to 20 |
| CAN0542 | CAN - stratum 42: prov 24 Eng. 21 to 41 |
| CAN0543 | CAN - stratum 43: prov 24 Eng. 42 to … |
| CAN0545 | CAN - stratum 45: prov 24 Fr. 0 to 20 |
| CAN0546 | CAN - stratum 46: prov 24 Fr. 21 to 41 |
| CAN0547 | CAN - stratum 47: prov 24 Fr. 42 to … |
| CAN0548 | CAN - stratum 51: prov 35 Eng. 0,1,2 |
| CAN0652 | CAN - stratum 52: prov 35 Eng. 3 to 41 |
| CAN0653 | CAN - stratum 53: prov 35 Eng. 42 to … |
| CAN0655 | CAN - stratum 55: prov 35 Fr. 0,1,2 |
| CAN0656 | CAN - stratum 56: prov 35 Fr. 3 to 20 |
| CAN0657 | CAN - stratum 57: prov 35 Fr. 21 to 41 |
| CAN0658 | CAN - stratum 58: prov 35 Fr. 42 to … |
| CAN0761 | CAN - stratum 61: prov 46 Eng. 0,1,2 |
| CAN0762 | CAN - stratum 62: prov 46 Eng. 3 to 20 |
| CAN0763 | CAN - stratum 63: prov 46 Eng. 21 to 41 |
| CAN0764 | CAN - stratum 64: prov 46 Eng. 42 to … |
| CAN0765 | CAN - stratum 65: prov 46 Fr. 0,1,2 |
| CAN0766 | CAN - stratum 66: prov 46 Fr. 3 to 20 |
| CAN0767 | CAN - stratum 67: prov 46 Fr. 21 to … |
| CAN0871 | CAN - stratum 71: prov 47 Eng. 0,1,2 |
| CAN0872 | CAN - stratum 72: prov 47 Eng. 3 to 20 |
| CAN0873 | CAN - stratum 73: prov 47 Eng. 21 to 41 |
| CAN0874 | CAN - stratum 74: prov 47 Eng. 42 to … |
| CAN0875 | CAN - stratum 75: prov 47 Fr. 0,1,2 |
| CAN0876 | CAN - stratum 76: prov 47 Fr. 3 to 20 |
| CAN0877 | CAN - stratum 77: prov 47 Fr. 21 to … |
| CAN0981 | CAN - stratum 81: prov 48 Eng. 0,1,2 |
| CAN0982 | CAN - stratum 82: prov 48 Eng. 3 to 20 |
| CAN0983 | CAN - stratum 83: prov 48 Eng. 21 to 41 |
| CAN0984 | CAN - stratum 84: prov 48 Eng. 42 to … |
| CAN0985 | CAN - stratum 85: prov 48 Fr. 0,1,2 |
| CAN0986 | CAN - stratum 86: prov 48 Fr. 3 to 20 |
| CAN0987 | CAN - stratum 87: prov 48 Fr. 21 to … |
| CAN1091 | CAN - stratum 91: prov 59 Eng. 0,1,2 |
| CAN1092 | CAN - stratum 92: prov 59 Eng. 3 to 20 |
| CAN1093 | CAN - stratum 93: prov 59 Eng. 21 to 41 |
| CAN1094 | CAN - stratum 94: prov 59 Eng. 42 to … |
| CAN1095 | CAN - stratum 95: prov 59 Fr. 0,1,2 |
| CAN1096 | CAN - stratum 96: prov 59 Fr. 3 to 20 |
| CAN1097 | CAN - stratum 97: prov 59 Fr. 21 to … |
| CAN9797 | Undisclosed STRATUM - Canada |
| CHE0101 | CHE - stratum 01: German, ISCED2, public |
| CHE0102 | CHE - stratum 02: German, ISCED2, private-subsidized |
| CHE0103 | CHE - stratum 03: German, ISCED2, private-not subsidized |
| CHE0104 | CHE - stratum 04: German, Mixed, public |
| CHE0105 | CHE - stratum 05: German, Mixed, private-subsidized |
| CHE0106 | CHE - stratum 06: German, Mixed, private-not subsidized |
| CHE0107 | CHE - stratum 07: German, ISCED3, public |
| CHE0108 | CHE - stratum 08: German, ISCED3, private-subsidized |
| CHE0109 | CHE - stratum 09: German, ISCED3, private-not subsidized |
| CHE0210 | CHE - stratum 10: French, ISCED2, public |
| CHE0211 | CHE - stratum 11: French, ISCED2, private-subsidized |
| CHE0212 | CHE - stratum 12: French, ISCED2, private-not subsidized |
| CHE0213 | CHE - stratum 13: French, Mixed, public |
| CHE0214 | CHE - stratum 14: French, Mixed, private-subsidized |
| CHE0215 | CHE - stratum 15: French, Mixed, private-not subsidized |
| CHE0216 | CHE - stratum 16: French, ISCED3, public |
| CHE0217 | CHE - stratum 17: French, ISCED3, private-subsidized |
| CHE0218 | CHE - stratum 18: French, ISCED3, private-not subsidized |
| CHE0319 | CHE - stratum 19: Italian, ISCED2, public |
| CHE0321 | CHE - stratum 21: Italian, ISCED2, private-not subsidized |
| CHE0323 | CHE - stratum 23: Italian, Mixed, private-subsidized |
| CHE0324 | CHE - stratum 24: Italian, Mixed 2, private-not subsidized |
| CHE0325 | CHE - stratum 25: Italian, ISCED3, public |
| CHE0326 | CHE - stratum 26: Italian, ISCED3, private-subsidized |
| CHE0327 | CHE - stratum 27: Italian, ISCED3, private-not subsidized |
| CHE9797 | Undisclosed STRATUM - Switzerland |
| CHL0101 | CHL - stratum 01: MUNICIPAL,PRIMARY,PRIMARY,NO 10TH GRADE |
| CHL0102 | CHL - stratum 02: MUNICIPAL,PRIMARY & SECONDARY,SECONDARY HU |
| CHL0103 | CHL - stratum 03: MUNICIPAL,PRIMARY & SECONDARY,SECONDARY HU |
| CHL0104 | CHL - stratum 04: MUNICIPAL,PRIMARY & SECONDARY,SECONDARY HU |
| CHL0105 | CHL - stratum 05: MUNICIPAL,PRIMARY & SECONDARY,SECONDARY TE |
| CHL0106 | CHL - stratum 06: MUNICIPAL,SECONDARY,SECONDARY HUMANISTIC S |
| CHL0107 | CHL - stratum 07: MUNICIPAL,SECONDARY,SECONDARY HUMANISTIC S |
| CHL0108 | CHL - stratum 08: MUNICIPAL,SECONDARY,SECONDARY TECHNICAL PR |
| CHL0209 | CHL - stratum 09: SUBSIDIZED,PRIMARY,PRIMARY,NO 10TH GRADE |
| CHL0210 | CHL - stratum 10: SUBSIDIZED,PRIMARY & SECONDARY,SECONDARY H |
| CHL0211 | CHL - stratum 11: SUBSIDIZED,PRIMARY & SECONDARY,SECONDARY H |
| CHL0212 | CHL - stratum 12: SUBSIDIZED,PRIMARY & SECONDARY,SECONDARY H |
| CHL0213 | CHL - stratum 13: SUBSIDIZED,PRIMARY & SECONDARY,SECONDARY T |
| CHL0214 | CHL - stratum 14: SUBSIDIZED,PRIMARY & SECONDARY,SECONDARY T |
| CHL0215 | CHL - stratum 15: SUBSIDIZED,SECONDARY,SECONDARY HUMANISTIC |
| CHL0216 | CHL - stratum 16: SUBSIDIZED,SECONDARY,SECONDARY HUMANISTIC |
| CHL0217 | CHL - stratum 17: SUBSIDIZED,SECONDARY,SECONDARY HUMANISTIC |
| CHL0218 | CHL - stratum 18: SUBSIDIZED,SECONDARY,SECONDARY TECHNICAL P |
| CHL0219 | CHL - stratum 19: SUBSIDIZED,SECONDARY,SECONDARY TECHNICAL P |
| CHL0320 | CHL - stratum 20: PRIVATE,PRIMARY,PRIMARY,NO 10TH GRADE |
| CHL0321 | CHL - stratum 21: PRIVATE,PRIMARY & SECONDARY,SECONDARY HUMA |
| CHL0322 | CHL - stratum 22: PRIVATE,PRIMARY & SECONDARY,SECONDARY HUMA |
| CHL0323 | CHL - stratum 23: PRIVATE,SECONDARY,SECONDARY HUMANISTIC SCI |
| CHL0324 | CHL - stratum 24: PRIVATE,SECONDARY,SECONDARY TECHNICAL PROF |
| CHL9797 | Undisclosed STRATUM - Chile |
| COL0101 | COL - stratum 01: 01: BOGOTÁ \ MODAL \ COMPLETE |
| COL0102 | COL - stratum 02: 02: BOGOTÁ \ MODAL \ REST |
| COL0103 | COL - stratum 03: 03: BOGOTÁ \ NO MODAL \ COMPLETE |
| COL0104 | COL - stratum 04: 04: BOGOTÁ \ NO MODAL \ REST |
| COL0205 | COL - stratum 05: 05: REST OF MANIZALES \ MODAL \ COMPLETE |
| COL0206 | COL - stratum 06: 06: REST OF MANIZALES \ MODAL \ REST |
| COL0207 | COL - stratum 07: 07: REST OF MANIZALES \ NO MODAL \ COMPLET |
| COL0208 | COL - stratum 08: 08: REST OF MANIZALES \ NO MODAL \ REST |
| COL0309 | COL - stratum 09: 09: MANIZALES-ESCUELA ACTIVA \ MODAL \ RES |
| COL0310 | COL - stratum 10: 10: MANIZALES-ESCUELA ACTIVA \ NO MODAL \ |
| COL0411 | COL - stratum 11: 11: MEDELLÍN \ MODAL \ COMPLETE |
| COL0412 | COL - stratum 12: 12: MEDELLÍN \ MODAL \ REST |
| COL0413 | COL - stratum 13: 13: MEDELLÍN \ NO MODAL \ COMPLETE |
| COL0414 | COL - stratum 14: 14: MEDELLÍN \ NO MODAL \ REST |
| COL0515 | COL - stratum 15: 15: CALI \ MODAL \ COMPLETE |
| COL0516 | COL - stratum 16: 16: CALI \ MODAL \ REST |
| COL0517 | COL - stratum 17: 17: CALI \ NO MODAL \ COMPLETE |
| COL0518 | COL - stratum 18: 18: CALI \ NO MODAL \ REST |
| COL0619 | COL - stratum 19: 19: REST OF THE COUNTRY \ MODAL \ COMPLETE |
| COL0620 | COL - stratum 20: 20: REST OF THE COUNTRY \ MODAL \ REST |
| COL0621 | COL - stratum 21: 21: REST OF THE COUNTRY \ NO MODAL \ COMPL |
| COL0622 | COL - stratum 22: 22: REST OF THE COUNTRY \ NO MODAL \ REST |
| COL9797 | Undisclosed STRATUM - Colombia |
| CRI0001 | CRI - stratum 01: Public academic urban |
| CRI0002 | CRI - stratum 02: Public academic rural |
| CRI0003 | CRI - stratum 03: Public technical urban |
| CRI0004 | CRI - stratum 04: Public technical rural |
| CRI0005 | CRI - stratum 05: Private |
| CRI9797 | Undisclosed STRATUM - Costa Rica |
| CZE0101 | CZE - stratum 01: Basic\Region1 |
| CZE0202 | CZE - stratum 02: Basic\Region2 |
| CZE0303 | CZE - stratum 03: Basic\Region3 |
| CZE0404 | CZE - stratum 04: Basic\Region4 |
| CZE0505 | CZE - stratum 05: Basic\Region5 |
| CZE0606 | CZE - stratum 06: Basic\Region6 |
| CZE0707 | CZE - stratum 07: Basic\Region7 |
| CZE0808 | CZE - stratum 08: Basic\Region8 |
| CZE0909 | CZE - stratum 09: Basic\Region9 |
| CZE1010 | CZE - stratum 10: Basic\Region10 |
| CZE1111 | CZE - stratum 11: Basic\Region11 |
| CZE1212 | CZE - stratum 12: Basic\Region12 |
| CZE1313 | CZE - stratum 13: Basic\Region13 |
| CZE1414 | CZE - stratum 14: Basic\Region14 |
| CZE1515 | CZE - stratum 15: 6-8yrGym\Region1 |
| CZE1616 | CZE - stratum 16: 6-8yrGym\Region2 |
| CZE1717 | CZE - stratum 17: 6-8yrGym\Region3 |
| CZE1818 | CZE - stratum 18: 6-8yrGym\Region4 |
| CZE1919 | CZE - stratum 19: 6-8yrGym\Region5 |
| CZE2020 | CZE - stratum 20: 6-8yrGym\Region6 |
| CZE2121 | CZE - stratum 21: 6-8yrGym\Region7 |
| CZE2222 | CZE - stratum 22: 6-8yrGym\Region8 |
| CZE2323 | CZE - stratum 23: 6-8yrGym\Region9 |
| CZE2424 | CZE - stratum 24: 6-8yrGym\Region10 |
| CZE2525 | CZE - stratum 25: 6-8yrGym\Region11 |
| CZE2626 | CZE - stratum 26: 6-8yrGym\Region12 |
| CZE2727 | CZE - stratum 27: 6-8yrGym\Region13 |
| CZE2828 | CZE - stratum 28: 6-8yrGym\Region14 |
| CZE2929 | CZE - stratum 29: 4yr Gym |
| CZE3030 | CZE - stratum 30: Voc-Tech-Conservatory with maturate |
| CZE3131 | CZE - stratum 31: Voc-Tech Secondary without maturate |
| CZE3232 | CZE - stratum 32: Special & practical |
| CZE9797 | Undisclosed STRATUM - Czech Republic |
| DEU0101 | DEU - stratum 01: NOR\Baden-Württemberg (BW) |
| DEU0102 | DEU - stratum 02: NOR\Bayern (BY) |
| DEU0103 | DEU - stratum 03: NOR\Berlin (BE) |
| DEU0104 | DEU - stratum 04: NOR\Brandenburg (BB) |
| DEU0105 | DEU - stratum 05: NOR\Bremen (HB) |
| DEU0106 | DEU - stratum 06: NOR\Hamburg (HH) |
| DEU0107 | DEU - stratum 07: NOR\Hessen (HE) |
| DEU0108 | DEU - stratum 08: NOR\Mecklenburg-Vorpommern (MV) |
| DEU0109 | DEU - stratum 09: NOR\Niedersachsen (NI) |
| DEU0210 | DEU - stratum 10: NOR\Nordrhein-Westfalen (NW) |
| DEU0211 | DEU - stratum 11: NOR\Rheinland-Pfalz (RP) |
| DEU0212 | DEU - stratum 12: NOR\Saarland (SL) |
| DEU0213 | DEU - stratum 13: NOR\Sachsen (SN) |
| DEU0214 | DEU - stratum 14: NOR\Sachsen-Anhalt (ST) |
| DEU0215 | DEU - stratum 15: NOR\Schleswig-Holstein (SH) |
| DEU0216 | DEU - stratum 16: NOR\Thüringen (TH) |
| DEU0217 | DEU - stratum 17: SEN schools |
| DEU0218 | DEU - stratum 18: Vocational Schools |
| DEU9797 | Undisclosed STRATUM - Germany |
| DNK0001 | DNK - stratum 01: 1 = High Minority |
| DNK0002 | DNK - stratum 02: 2 = Mid Minority |
| DNK0003 | DNK - stratum 03: 3 = Low Minority |
| DNK0004 | DNK - stratum 04: 4 = No Minority |
| DNK9797 | Undisclosed STRATUM - Denmark |
| DNK9805 | DNK - stratum 05: 5 = Faroe Island |
| DOM0003 | DOM - stratum 03: PUBLIC,URBAN,ISCED 3,School with modal gra |
| DOM0004 | DOM - stratum 04: PUBLIC,URBAN,ISCED 3,School with not modal |
| DOM0005 | DOM - stratum 05: PUBLIC,URBAN,MIXED,School with modal grade |
| DOM0009 | DOM - stratum 09: PUBLIC,RURAL,ISCED 3,School with modal gra |
| DOM0010 | DOM - stratum 10: PUBLIC,RURAL,ISCED 3,School with not modal |
| DOM0011 | DOM - stratum 11: PUBLIC,RURAL,MIXED,School with modal grade |
| DOM0015 | DOM - stratum 15: PRIVATE,URBAN,ISCED 3,School with modal gr |
| DOM0017 | DOM - stratum 17: PRIVATE,URBAN,MIXED,School with modal grad |
| DOM0018 | DOM - stratum 18: PRIVATE,URBAN,MIXED,School with not modal |
| DOM0022 | DOM - stratum 22: PRIVATE,RURAL,ISCED 3,School with not moda |
| DOM0023 | DOM - stratum 23: PRIVATE,RURAL,MIXED,School with modal grad |
| DOM0027 | DOM - stratum 27: SEMIOFICIAL,URBAN,ISCED 3,School with moda |
| DOM0028 | DOM - stratum 28: SEMIOFICIAL,URBAN,ISCED 3,School with not |
| DOM0029 | DOM - stratum 29: SEMIOFICIAL,URBAN,MIXED,School with modal |
| DOM0033 | DOM - stratum 33: SEMIOFICIAL,RURAL,ISCED 3,School with moda |
| DOM0035 | DOM - stratum 35: SEMIOFICIAL,RURAL,MIXED,School with modal |
| DOM0037 | DOM - stratum 37: 37,37,ISCED 2,School with not modal grade |
| DOM9797 | Undisclosed STRATUM - Dominican Republic |
| DZA0001 | DZA - stratum 01: Est,Rural |
| DZA0002 | DZA - stratum 02: Est,S Urbain |
| DZA0003 | DZA - stratum 03: Est,Urbain |
| DZA0004 | DZA - stratum 04: Nord,Rural |
| DZA0005 | DZA - stratum 05: Nord,S Urbain |
| DZA0006 | DZA - stratum 06: Nord,Urbain |
| DZA0007 | DZA - stratum 07: Ouest,Rural |
| DZA0008 | DZA - stratum 08: Ouest,S Urbain |
| DZA0009 | DZA - stratum 09: Ouest,Urbain |
| DZA0010 | DZA - stratum 10: Sud,Rural |
| DZA0011 | DZA - stratum 11: Sud,S Urbain |
| DZA0012 | DZA - stratum 12: Sud,Urbain |
| DZA9797 | Undisclosed STRATUM - Algeria |
| ESP0101 | ESP - stratum 01: Andalusia, public, NA |
| ESP0102 | ESP - stratum 02: Andalusia, private, NA |
| ESP0203 | ESP - stratum 03: Aragon, public, NA |
| ESP0204 | ESP - stratum 04: Aragon, private, NA |
| ESP0305 | ESP - stratum 05: Asturias, public, NA |
| ESP0306 | ESP - stratum 06: Asturias, private, NA |
| ESP0407 | ESP - stratum 07: Balearic Islands, public, NA |
| ESP0408 | ESP - stratum 08: Balearic Islands, private, NA |
| ESP0509 | ESP - stratum 09: Canary Islands, public, NA |
| ESP0510 | ESP - stratum 10: Canary Islands, private, NA |
| ESP0611 | ESP - stratum 11: Cantabria, public, NA |
| ESP0612 | ESP - stratum 12: Cantabria, private, NA |
| ESP0713 | ESP - stratum 13: Castile and Leon, public, NA |
| ESP0714 | ESP - stratum 14: Castile and Leon, private, NA |
| ESP0815 | ESP - stratum 15: Castile - La Mancha, public, NA |
| ESP0816 | ESP - stratum 16: Castile - La Mancha, private, NA |
| ESP0917 | ESP - stratum 17: Catalonia, public, NA |
| ESP0918 | ESP - stratum 18: Catalonia, private, NA |
| ESP1019 | ESP - stratum 19: Extremadura, public, NA |
| ESP1020 | ESP - stratum 20: Extremadura, private, NA |
| ESP1121 | ESP - stratum 21: Galicia, public, NA |
| ESP1122 | ESP - stratum 22: Galicia, private, NA |
| ESP1223 | ESP - stratum 23: La Rioja, public, NA |
| ESP1224 | ESP - stratum 24: La Rioja, private, NA |
| ESP1325 | ESP - stratum 25: Madrid, public, NA |
| ESP1326 | ESP - stratum 26: Madrid, private, NA |
| ESP1427 | ESP - stratum 27: Murcia, public, NA |
| ESP1428 | ESP - stratum 28: Murcia, private, NA |
| ESP1529 | ESP - stratum 29: Navarra, public, NA |
| ESP1530 | ESP - stratum 30: Navarra, private, NA |
| ESP1631 | ESP - stratum 31: Basque Country, public, A |
| ESP1632 | ESP - stratum 32: Basque Country, public, B |
| ESP1633 | ESP - stratum 33: Basque Country, public, D |
| ESP1634 | ESP - stratum 34: Basque Country, private, A |
| ESP1635 | ESP - stratum 35: Basque Country, private, B |
| ESP1636 | ESP - stratum 36: Basque Country, private, D |
| ESP1737 | ESP - stratum 37: Valencia, public, NA |
| ESP1738 | ESP - stratum 38: Valencia, private, NA |
| ESP9001 | ESP - stratum 01: Andalusia, public, NA |
| ESP9002 | ESP - stratum 02: Andalusia, private, NA |
| ESP9003 | ESP - stratum 03: Aragon, public, NA |
| ESP9004 | ESP - stratum 04: Aragon, private, NA |
| ESP9005 | ESP - stratum 05: Asturias, public, NA |
| ESP9006 | ESP - stratum 06: Asturias, private, NA |
| ESP9007 | ESP - stratum 07: Balearic Islands, public, NA |
| ESP9008 | ESP - stratum 08: Balearic Islands, private, NA |
| ESP9009 | ESP - stratum 09: Canary Islands, public, NA |
| ESP9010 | ESP - stratum 10: Canary Islands, private, NA |
| ESP9011 | ESP - stratum 11: Cantabria, public, NA |
| ESP9012 | ESP - stratum 12: Cantabria, private, NA |
| ESP9013 | ESP - stratum 13: Castile and Leon, public, NA |
| ESP9014 | ESP - stratum 14: Castile and Leon, private, NA |
| ESP9015 | ESP - stratum 15: Castile - La Mancha, public, NA |
| ESP9016 | ESP - stratum 16: Castile - La Mancha, private, NA |
| ESP9017 | ESP - stratum 17: Catalonia, public, NA |
| ESP9018 | ESP - stratum 18: Catalonia, private, NA |
| ESP9019 | ESP - stratum 19: Extremadura, public, NA |
| ESP9020 | ESP - stratum 20: Extremadura, private, NA |
| ESP9021 | ESP - stratum 21: Galicia, public, NA |
| ESP9022 | ESP - stratum 22: Galicia, private, NA |
| ESP9023 | ESP - stratum 23: La Rioja, public, NA |
| ESP9024 | ESP - stratum 24: La Rioja, private, NA |
| ESP9025 | ESP - stratum 25: Madrid, public, NA |
| ESP9026 | ESP - stratum 26: Madrid, private, NA |
| ESP9027 | ESP - stratum 27: Murcia, public, NA |
| ESP9028 | ESP - stratum 28: Murcia, private, NA |
| ESP9029 | ESP - stratum 29: Navarra, public, NA |
| ESP9030 | ESP - stratum 30: Navarra, private, NA |
| ESP9031 | ESP - stratum 31: Basque Country, public, A |
| ESP9032 | ESP - stratum 32: Basque Country, public, B |
| ESP9033 | ESP - stratum 33: Basque Country, public, D |
| ESP9034 | ESP - stratum 34: Basque Country, private, A |
| ESP9035 | ESP - stratum 35: Basque Country, private, B |
| ESP9036 | ESP - stratum 36: Basque Country, private, D |
| ESP9037 | ESP - stratum 37: Valencia, public, NA |
| ESP9038 | ESP - stratum 38: Valencia, private, NA |
| ESP9039 | ESP - stratum 39: Ceuta and Melilla, public, NA |
| ESP9040 | ESP - stratum 40: Ceuta and Melilla, private, NA |
| ESP9797 | Undisclosed STRATUM - Spain |
| EST0001 | EST - stratum 01: Estonian |
| EST0002 | EST - stratum 02: Russian |
| EST0003 | EST - stratum 03: Mixed |
| EST9797 | Undisclosed STRATUM - Estonia |
| FIN0001 | FIN - stratum 01: Helsinki\Uusimaa-Urban |
| FIN0002 | FIN - stratum 02: Helsinki\Uusimaa-Rural |
| FIN0003 | FIN - stratum 03: Southern Finland-Urban |
| FIN0004 | FIN - stratum 04: Southern Finland-Rural |
| FIN0005 | FIN - stratum 05: Western Finland-Urban |
| FIN0006 | FIN - stratum 06: Western Finland-Rural |
| FIN0007 | FIN - stratum 07: Northern and Eastern Finland-Urban |
| FIN0008 | FIN - stratum 08: Northern and Eastern Finland-Rural |
| FIN0009 | FIN - stratum 09: Swedish speaking area-Urban |
| FIN0010 | FIN - stratum 10: Swedish speaking area-Rural |
| FIN9797 | Undisclosed STRATUM - Finland |
| FRA0101 | FRA - stratum 01: Lycée GT LS |
| FRA0202 | FRA - stratum 02: Collège LS |
| FRA0203 | FRA - stratum 03: Lycée PRO LS |
| FRA0204 | FRA - stratum 04: Lycée agricole LS |
| FRA0205 | FRA - stratum 05: MSS |
| FRA0206 | FRA - stratum 06: VSS |
| FRA9797 | Undisclosed STRATUM - France |
| GBR0001 | QSC - stratum 01: pub fund-lowest |
| GBR0002 | QSC - stratum 02: pub fund-second lowest |
| GBR0003 | QSC - stratum 03: pub fund-middle |
| GBR0004 | QSC - stratum 04: pub fund-second highest |
| GBR0005 | QSC - stratum 05: pub fund-highest |
| GBR0006 | QSC - stratum 06: pub fund-missing |
| GBR0012 | QSC - stratum 12: indep-missing |
| GBR1101 | QUK - stratum 01: England,independent,North,male -- 1 |
| GBR1102 | QUK - stratum 02: England,independent,North,mixed -- 2 |
| GBR1103 | QUK - stratum 03: England,independent,North,female -- 3 |
| GBR1104 | QUK - stratum 04: England,independent,Midlands,male -- 4 |
| GBR1105 | QUK - stratum 05: England,independent,Midlands,mixed -- 5 |
| GBR1106 | QUK - stratum 06: England,independent,Midlands,female -- 6 |
| GBR1107 | QUK - stratum 07: England,independent,South,male -- 7 |
| GBR1108 | QUK - stratum 08: England,independent,South,mixed -- 8 |
| GBR1109 | QUK - stratum 09: England,independent,South,female -- 9 |
| GBR1110 | QUK - stratum 10: England,independent,Greater London,male -- |
| GBR1111 | QUK - stratum 11: England,independent,Greater London,mixed - |
| GBR1112 | QUK - stratum 12: England,independent,Greater London,female |
| GBR1113 | QUK - stratum 13: England,maintained selective,North,male -- |
| GBR1114 | QUK - stratum 14: England,maintained selective,North,mixed - |
| GBR1115 | QUK - stratum 15: England,maintained selective,Midlands,male |
| GBR1116 | QUK - stratum 16: England,maintained selective,Midlands,mixe |
| GBR1117 | QUK - stratum 17: England,maintained selective,Midlands,fema |
| GBR1118 | QUK - stratum 18: England,maintained selective,South,male -- |
| GBR1119 | QUK - stratum 19: England,maintained selective,South,mixed - |
| GBR1120 | QUK - stratum 20: England,maintained selective,South,female |
| GBR1121 | QUK - stratum 21: England,maintained selective,Greater Londo |
| GBR1122 | QUK - stratum 22: England,maintained selective,Greater Londo |
| GBR1123 | QUK - stratum 23: England,maintained selective,Greater Londo |
| GBR1124 | QUK - stratum 24: England,maintained non-selective,North,mal |
| GBR1125 | QUK - stratum 25: England,maintained non-selective,North,mix |
| GBR1126 | QUK - stratum 26: England,maintained non-selective,North,fem |
| GBR1127 | QUK - stratum 27: England,maintained non-selective,Midlands, |
| GBR1128 | QUK - stratum 28: England,maintained non-selective,Midlands, |
| GBR1129 | QUK - stratum 29: England,maintained non-selective,Midlands, |
| GBR1130 | QUK - stratum 30: England,maintained non-selective,South,mal |
| GBR1131 | QUK - stratum 31: England,maintained non-selective,South,mix |
| GBR1132 | QUK - stratum 32: England,maintained non-selective,South,fem |
| GBR1133 | QUK - stratum 33: England,maintained non-selective,Greater L |
| GBR1134 | QUK - stratum 34: England,maintained non-selective,Greater L |
| GBR1135 | QUK - stratum 35: England,maintained non-selective,Greater L |
| GBR1136 | QUK - stratum 36: England,academy,North,male -- 36 |
| GBR1137 | QUK - stratum 37: England,academy,North,mixed -- 37 |
| GBR1138 | QUK - stratum 38: England,academy,North,female -- 38 |
| GBR1139 | QUK - stratum 39: England,academy,Midlands,male -- 39 |
| GBR1140 | QUK - stratum 40: England,academy,Midlands,mixed -- 40 |
| GBR1141 | QUK - stratum 41: England,academy,Midlands,female -- 41 |
| GBR1142 | QUK - stratum 42: England,academy,South,male -- 42 |
| GBR1143 | QUK - stratum 43: England,academy,South,mixed -- 43 |
| GBR1144 | QUK - stratum 44: England,academy,South,female -- 44 |
| GBR1145 | QUK - stratum 45: England,academy,Greater London,male -- 45 |
| GBR1146 | QUK - stratum 46: England,academy,Greater London,mixed -- 46 |
| GBR1147 | QUK - stratum 47: England,academy,Greater London,female -- 4 |
| GBR1264 | QUK - stratum 64: Northern Ireland,independent,North Eastern |
| GBR1265 | QUK - stratum 65: Northern Ireland,independent,South Eastern |
| GBR1266 | QUK - stratum 66: Northern Ireland,independent,Southern,mixe |
| GBR1267 | QUK - stratum 67: Northern Ireland,maintained selective,Belf |
| GBR1268 | QUK - stratum 68: Northern Ireland,maintained selective,Belf |
| GBR1269 | QUK - stratum 69: Northern Ireland,maintained selective,Belf |
| GBR1270 | QUK - stratum 70: Northern Ireland,maintained selective,West |
| GBR1271 | QUK - stratum 71: Northern Ireland,maintained selective,West |
| GBR1272 | QUK - stratum 72: Northern Ireland,maintained selective,West |
| GBR1273 | QUK - stratum 73: Northern Ireland,maintained selective,Nort |
| GBR1274 | QUK - stratum 74: Northern Ireland,maintained selective,Nort |
| GBR1275 | QUK - stratum 75: Northern Ireland,maintained selective,Nort |
| GBR1276 | QUK - stratum 76: Northern Ireland,maintained selective,Sout |
| GBR1277 | QUK - stratum 77: Northern Ireland,maintained selective,Sout |
| GBR1278 | QUK - stratum 78: Northern Ireland,maintained selective,Sout |
| GBR1279 | QUK - stratum 79: Northern Ireland,maintained selective,Sout |
| GBR1280 | QUK - stratum 80: Northern Ireland,maintained selective,Sout |
| GBR1281 | QUK - stratum 81: Northern Ireland,maintained selective,Sout |
| GBR1282 | QUK - stratum 82: Northern Ireland,maintained non-selective, |
| GBR1283 | QUK - stratum 83: Northern Ireland,maintained non-selective, |
| GBR1284 | QUK - stratum 84: Northern Ireland,maintained non-selective, |
| GBR1285 | QUK - stratum 85: Northern Ireland,maintained non-selective, |
| GBR1286 | QUK - stratum 86: Northern Ireland,maintained non-selective, |
| GBR1287 | QUK - stratum 87: Northern Ireland,maintained non-selective, |
| GBR1288 | QUK - stratum 88: Northern Ireland,maintained non-selective, |
| GBR1289 | QUK - stratum 89: Northern Ireland,maintained non-selective, |
| GBR1290 | QUK - stratum 90: Northern Ireland,maintained non-selective, |
| GBR1291 | QUK - stratum 91: Northern Ireland,maintained non-selective, |
| GBR1292 | QUK - stratum 92: Northern Ireland,maintained non-selective, |
| GBR1293 | QUK - stratum 93: Northern Ireland,maintained non-selective, |
| GBR1294 | QUK - stratum 94: Northern Ireland,maintained non-selective, |
| GBR1295 | QUK - stratum 95: Northern Ireland,maintained non-selective, |
| GBR1348 | QUK - stratum 48: Wales,Maintained,North Wales,mixed -- 48 |
| GBR1349 | QUK - stratum 49: Wales,Maintained,Powys & South West,male - |
| GBR1350 | QUK - stratum 50: Wales,Maintained,Powys & South West,mixed |
| GBR1351 | QUK - stratum 51: Wales,Maintained,Powys & South West,female |
| GBR1352 | QUK - stratum 52: Wales,Maintained,South East Wales,mixed -- |
| GBR1353 | QUK - stratum 53: Wales,Maintained,South East Wales,female - |
| GBR1354 | QUK - stratum 54: Wales,independent,North Wales,male -- 54 |
| GBR1355 | QUK - stratum 55: Wales,independent,North Wales,mixed -- 55 |
| GBR1356 | QUK - stratum 56: Wales,independent,North Wales,female -- 56 |
| GBR1357 | QUK - stratum 57: Wales,independent,Powys & South West,male |
| GBR1358 | QUK - stratum 58: Wales,independent,Powys & South West,mixed |
| GBR1359 | QUK - stratum 59: Wales,independent,South East Wales,male -- |
| GBR1360 | QUK - stratum 60: Wales,independent,South East Wales,mixed - |
| GBR1361 | QUK - stratum 61: Wales,independent,South East Wales,female |
| GBR1362 | QUK - stratum 62: Northern Ireland,independent,Belfast,mixed |
| GBR1363 | QUK - stratum 63: Northern Ireland,independent,Western,mixed |
| GEO0001 | GEO - stratum 01: Tbilisi \ Public |
| GEO0002 | GEO - stratum 02: Tbilisi \ Private |
| GEO0003 | GEO - stratum 03: Abkhazia \ Public |
| GEO0004 | GEO - stratum 04: Achara \ Public |
| GEO0005 | GEO - stratum 05: Achara \ Private |
| GEO0006 | GEO - stratum 06: Guria \ Public |
| GEO0007 | GEO - stratum 07: Guria \ Private |
| GEO0008 | GEO - stratum 08: Imereti \ Public |
| GEO0009 | GEO - stratum 09: Imereti \ Private |
| GEO0010 | GEO - stratum 10: Kakheti \ Public |
| GEO0011 | GEO - stratum 11: Kakheti \ Private |
| GEO0012 | GEO - stratum 12: Mtskheta-Mtianeti \ Public |
| GEO0013 | GEO - stratum 13: Mtskheta-Mtianeti \ Private |
| GEO0014 | GEO - stratum 14: Racha-Lechkhumi \ Public |
| GEO0015 | GEO - stratum 15: Racha-Lechkhumi \ Private |
| GEO0016 | GEO - stratum 16: Samegrelo-Zemo Svaneti \ Public |
| GEO0017 | GEO - stratum 17: Samegrelo-Zemo Svaneti \ Private |
| GEO0018 | GEO - stratum 18: Samtskhe-Javakheti \ Public |
| GEO0019 | GEO - stratum 19: Samtskhe-Javakheti \ Private |
| GEO0020 | GEO - stratum 20: Shida Qartli \ Public |
| GEO0021 | GEO - stratum 21: Shida Qartli \ Private |
| GEO0022 | GEO - stratum 22: Qvemo Qartli \ Public |
| GEO0023 | GEO - stratum 23: Qvemo Qartli \ Private |
| GEO9797 | Undisclosed STRATUM - Georgia |
| GRC0001 | GRC - stratum 01: Rural |
| GRC0002 | GRC - stratum 02: Suburban |
| GRC0003 | GRC - stratum 03: Urban |
| GRC9797 | Undisclosed STRATUM - Greece |
| HKG0001 | HKG - stratum 01: Government\Modal grade |
| HKG0003 | HKG - stratum 03: Aided or Caput\Modal grade |
| HKG0004 | HKG - stratum 04: Aided or Caput\No modal grade |
| HKG0005 | HKG - stratum 05: Private or International\Modal grade |
| HKG0007 | HKG - stratum 07: Direct Subsidy Scheme\Modal grade |
| HKG9797 | Undisclosed STRATUM - Hong Kong |
| HRV0001 | HRV - stratum 01: Four year vocational prog |
| HRV0002 | HRV - stratum 02: Vocational - industrial - crafts prog. |
| HRV0003 | HRV - stratum 03: Mixed type |
| HRV0004 | HRV - stratum 04: Art - vocational prog |
| HRV0005 | HRV - stratum 05: Gymnasium |
| HRV0006 | HRV - stratum 06: Primary schools (lower secondary education |
| HRV9797 | Undisclosed STRATUM - Croatia |
| HUN0001 | HUN - stratum 01: Primary school -- 1 |
| HUN0002 | HUN - stratum 02: Grammar school 1 (4-5 years long) -- 2 |
| HUN0003 | HUN - stratum 03: Grammar school 2 (6 years long) -- 3 |
| HUN0004 | HUN - stratum 04: Grammar school 3 (8 years long) -- 4 |
| HUN0005 | HUN - stratum 05: Vocational secondary school -- 5 |
| HUN0006 | HUN - stratum 06: Vocational school -- 6 |
| HUN9797 | Undisclosed STRATUM - Hungary |
| IDN0001 | IDN - stratum 01: National Exam Result-Good |
| IDN0002 | IDN - stratum 02: National Exam Result-Moderate |
| IDN0003 | IDN - stratum 03: National Exam Result-Poor |
| IDN9797 | Undisclosed STRATUM - Indonesia |
| IRL0001 | IRL - stratum 01: up to 40\community-comprehensive |
| IRL0002 | IRL - stratum 02: 41-80\community-comprehensive |
| IRL0003 | IRL - stratum 03: 81 and up\community-comprehensive |
| IRL0004 | IRL - stratum 04: up to 40\secondary |
| IRL0005 | IRL - stratum 05: 41-80\secondary |
| IRL0006 | IRL - stratum 06: 81 and up\secondary |
| IRL0007 | IRL - stratum 07: up to 40\vocational |
| IRL0008 | IRL - stratum 08: 41-80\vocational |
| IRL0009 | IRL - stratum 09: 81 and up\vocational |
| IRL9797 | Undisclosed STRATUM - Ireland |
| ISL0001 | ISL - stratum 01: Reykjavik \ 1-8 |
| ISL0002 | ISL - stratum 02: Reykjavik \ 9-16 |
| ISL0003 | ISL - stratum 03: Reykjavik \ 17-35 |
| ISL0004 | ISL - stratum 04: Reykjavik \ > 35 |
| ISL0005 | ISL - stratum 05: Nágrenni Reykjavíkur \ 9-16 |
| ISL0006 | ISL - stratum 06: Nágrenni Reykjavíkur \ 17-35 |
| ISL0007 | ISL - stratum 07: Nágrenni Reykjavíkur \ > 35 |
| ISL0008 | ISL - stratum 08: Suðurnes \ 17-35 |
| ISL0009 | ISL - stratum 09: Suðurnes \ >35 |
| ISL0010 | ISL - stratum 10: Vesturland \ 1-8 |
| ISL0011 | ISL - stratum 11: Vesturland \ 9-16 |
| ISL0012 | ISL - stratum 12: Vesturland \ 17-35 |
| ISL0013 | ISL - stratum 13: Vesturland \ >35 |
| ISL0014 | ISL - stratum 14: Vestfirðir \ 1-8 |
| ISL0015 | ISL - stratum 15: Vestfirðir \ 9-16 |
| ISL0016 | ISL - stratum 16: Vestfirðir \ > 35 |
| ISL0017 | ISL - stratum 17: Norðurland vestra \ 1-8 |
| ISL0018 | ISL - stratum 18: Norðurland vestra \ 9-16 |
| ISL0019 | ISL - stratum 19: Norðurland vestra \17-35 |
| ISL0020 | ISL - stratum 20: Norðurland vestra \ >35 |
| ISL0021 | ISL - stratum 21: Norðurland eystra \ 1-8 |
| ISL0022 | ISL - stratum 22: Norðurland eystra \ 9-16 |
| ISL0023 | ISL - stratum 23: Norðurland eystra \ 17-35 |
| ISL0024 | ISL - stratum 24: Norðurland eystra \ > 35 |
| ISL0025 | ISL - stratum 25: Austurland \ 1-8 |
| ISL0026 | ISL - stratum 26: Austurland \ 9-16 |
| ISL0027 | ISL - stratum 27: Austurland \ 17-35 |
| ISL0028 | ISL - stratum 28: Austurland \ >35 |
| ISL0029 | ISL - stratum 29: Suðurland \ 1-8 |
| ISL0030 | ISL - stratum 30: Suðurland \ 9-16 |
| ISL0031 | ISL - stratum 31: Suðurland \17-35 |
| ISL0032 | ISL - stratum 32: Suðurland \ > 35 |
| ISL9797 | Undisclosed STRATUM - Iceland |
| ISR0001 | ISR - stratum 01: Hebrew-secular |
| ISR0002 | ISR - stratum 02: Hebrew-religious-Female |
| ISR0003 | ISR - stratum 03: Hebrew-religious-Mix |
| ISR0004 | ISR - stratum 04: Hebrew-religious-Male |
| ISR0005 | ISR - stratum 05: Arabic- Arab |
| ISR0006 | ISR - stratum 06: Arabic- Druze |
| ISR0007 | ISR - stratum 07: Arabic- Bedouin |
| ISR0008 | ISR - stratum 08: Hebrew-Ultra-Orthodox-Female |
| ISR0009 | ISR - stratum 09: Hebrew-Ultra-Orthodox-Male |
| ISR0010 | ISR - stratum 10: Hebrew-Ultra-Orthodox-Mix |
| ISR0011 | ISR - stratum 11: Apprenticeship institutions - Hebrew |
| ISR0012 | ISR - stratum 12: Apprenticeship institutions - Arabic |
| ISR9797 | Undisclosed STRATUM - Israel |
| ITA0101 | ITA - stratum 01: Bolzano Licei |
| ITA0102 | ITA - stratum 02: Bolzano Tecnici |
| ITA0103 | ITA - stratum 03: Bolzano Professionale |
| ITA0104 | ITA - stratum 04: Bolzano Medie |
| ITA0105 | ITA - stratum 05: Bolzano Formazione Professionale |
| ITA0306 | ITA - stratum 06: Campania Licei |
| ITA0307 | ITA - stratum 07: Campania Tecnici |
| ITA0308 | ITA - stratum 08: Campania Professionale |
| ITA0309 | ITA - stratum 09: Campania Medie |
| ITA0715 | ITA - stratum 15: Lombardia Licei |
| ITA0716 | ITA - stratum 16: Lombardia Tecnici |
| ITA0717 | ITA - stratum 17: Lombardia Professionale |
| ITA0718 | ITA - stratum 18: Lombardia Medie |
| ITA0719 | ITA - stratum 19: Lombardia Formazione Professionale |
| ITA1210 | ITA - stratum 10: Trento Licei |
| ITA1211 | ITA - stratum 11: Trento Tecnici |
| ITA1212 | ITA - stratum 12: Trento Professionale |
| ITA1213 | ITA - stratum 13: Trento Medie |
| ITA1214 | ITA - stratum 14: Trento Formazione Professionale |
| ITA1320 | ITA - stratum 20: Other Licei |
| ITA1321 | ITA - stratum 21: Other Tecnici |
| ITA1322 | ITA - stratum 22: Other Professionale |
| ITA1323 | ITA - stratum 23: Other Medie |
| ITA1324 | ITA - stratum 24: Other Formazione Professionale |
| ITA1325 | ITA - stratum 25: Molise Licei |
| ITA1326 | ITA - stratum 26: Molise Tecnici |
| ITA1327 | ITA - stratum 27: Molise Professionale |
| ITA1328 | ITA - stratum 28: Molise Medie |
| ITA1329 | ITA - stratum 29: Basilicata Licei |
| ITA1330 | ITA - stratum 30: Basilicata Tecnici |
| ITA1331 | ITA - stratum 31: Basilicata Professionale |
| ITA1332 | ITA - stratum 32: Basilicata Medie |
| ITA1333 | ITA - stratum 33: F.V.G. slovenian Licei |
| ITA1334 | ITA - stratum 34: F.V.G. slovenian Tecnici |
| ITA1335 | ITA - stratum 35: F.V.G. slovenian Professionale |
| ITA1336 | ITA - stratum 36: F.V.G. slovenian Medie |
| ITA1337 | ITA - stratum 37: F.V.G. non slovenian Licei |
| ITA1338 | ITA - stratum 38: F.V.G. non slovenian Tecnici |
| ITA1339 | ITA - stratum 39: F.V.G. non slovenian Professionale |
| ITA1340 | ITA - stratum 40: F.V.G. non slovenian Medie |
| ITA1341 | ITA - stratum 41: F.V.G. non slovenian Formazione Profession |
| ITA1342 | ITA - stratum 42: Abruzzo Licei |
| ITA1343 | ITA - stratum 43: Abruzzo Tecnici |
| ITA1344 | ITA - stratum 44: Abruzzo Professionale |
| ITA1345 | ITA - stratum 45: Abruzzo Medie |
| ITA1346 | ITA - stratum 46: Abruzzo Formazione Professionale |
| ITA1347 | ITA - stratum 47: Liguria Licei |
| ITA1348 | ITA - stratum 48: Liguria Tecnici |
| ITA1349 | ITA - stratum 49: Liguria Professionale |
| ITA1350 | ITA - stratum 50: Liguria Medie |
| ITA1351 | ITA - stratum 51: Liguria Formazione Professionale |
| ITA1352 | ITA - stratum 52: Marche Licei |
| ITA1353 | ITA - stratum 53: Marche Tecnici |
| ITA1354 | ITA - stratum 54: Marche Professionale |
| ITA1355 | ITA - stratum 55: Marche Medie |
| ITA1356 | ITA - stratum 56: Marche Formazione Professionale |
| ITA1357 | ITA - stratum 57: Sardegna Licei |
| ITA1358 | ITA - stratum 58: Sardegna Tecnici |
| ITA1359 | ITA - stratum 59: Sardegna Professionale |
| ITA1360 | ITA - stratum 60: Sardegna Medie |
| ITA1361 | ITA - stratum 61: Valle d’Aosta Licei |
| ITA1362 | ITA - stratum 62: Valle d’Aosta Tecnici |
| ITA1363 | ITA - stratum 63: Valle d’Aosta Professionale |
| ITA1364 | ITA - stratum 64: Valle d’Aosta Medie |
| ITA9797 | Undisclosed STRATUM - Italy |
| JOR0001 | JOR - stratum 01: Public_Discovery |
| JOR0002 | JOR - stratum 02: Public_Madrasati |
| JOR0003 | JOR - stratum 03: Public_ERSP |
| JOR0004 | JOR - stratum 04: Public_Other |
| JOR0005 | JOR - stratum 05: UNRWA |
| JOR0006 | JOR - stratum 06: Private |
| JOR9797 | Undisclosed STRATUM - Jordan |
| JPN0101 | JPN - stratum 01: Public\Academic |
| JPN0202 | JPN - stratum 02: Public\Practical |
| JPN0203 | JPN - stratum 03: Private\Academic |
| JPN0204 | JPN - stratum 04: Private\Practical |
| JPN9797 | Undisclosed STRATUM - Japan |
| KAZ0101 | KAZ - stratum 01: Akmolinskaya oblast \ Kazakh \ non-intelle |
| KAZ0102 | KAZ - stratum 02: Akmolinskaya oblast \ Russian \ non-intell |
| KAZ0103 | KAZ - stratum 03: Akmolinskaya oblast \ Kazakh\Russian \ non |
| KAZ0104 | KAZ - stratum 04: Aktubinskaya oblast \ Kazakh \ non-intelle |
| KAZ0105 | KAZ - stratum 05: Aktubinskaya oblast \ Russian \ non-intell |
| KAZ0106 | KAZ - stratum 06: Aktubinskaya oblast \ Kazakh\Russian \ non |
| KAZ0107 | KAZ - stratum 07: Almatinskaya oblast \ Kazakh \ non-intelle |
| KAZ0108 | KAZ - stratum 08: Almatinskaya oblast \ Russian \ non-intell |
| KAZ0109 | KAZ - stratum 09: Almatinskaya oblast \ Kazakh\Russian \ non |
| KAZ0110 | KAZ - stratum 10: Atyrauskaya oblast \ Kazakh \ non-intellec |
| KAZ0111 | KAZ - stratum 11: Atyrauskaya oblast \ Russian \ non-intelle |
| KAZ0112 | KAZ - stratum 12: Atyrauskaya oblast \ Kazakh\Russian \ non- |
| KAZ0113 | KAZ - stratum 13: East-Kazakhstan oblast \ Kazakh \ non-inte |
| KAZ0114 | KAZ - stratum 14: East-Kazakhstan oblast \ Russian \ non-int |
| KAZ0115 | KAZ - stratum 15: East-Kazakhstan oblast \ Kazakh\Russian \ |
| KAZ0116 | KAZ - stratum 16: Zhambylskaya oblast \ Kazakh \ non-intelle |
| KAZ0117 | KAZ - stratum 17: Zhambylskaya oblast \ Russian \ non-intell |
| KAZ0118 | KAZ - stratum 18: Zhambylskaya oblast \ Kazakh\Russian \ non |
| KAZ0119 | KAZ - stratum 19: West-Kazakhstan oblast \ Kazakh \ non-inte |
| KAZ0120 | KAZ - stratum 20: West-Kazakhstan oblast \ Russian \ non-int |
| KAZ0121 | KAZ - stratum 21: West-Kazakhstan oblast \ Kazakh\Russian \ |
| KAZ0122 | KAZ - stratum 22: Karagandinskaya oblast \ Kazakh \ non-inte |
| KAZ0123 | KAZ - stratum 23: Karagandinskaya oblast \ Russian \ non-int |
| KAZ0124 | KAZ - stratum 24: Karagandinskaya oblast \ Kazakh\Russian \ |
| KAZ0125 | KAZ - stratum 25: Kostanayskaya oblast \ Kazakh \ non-intell |
| KAZ0126 | KAZ - stratum 26: Kostanayskaya oblast \ Russian \ non-intel |
| KAZ0127 | KAZ - stratum 27: Kostanayskaya oblast \ Kazakh\Russian \ no |
| KAZ0128 | KAZ - stratum 28: Kyzyl-Ordinskaya oblast \ Kazakh \ non-int |
| KAZ0129 | KAZ - stratum 29: Kyzyl-Ordinskaya oblast \ Russian \ non-in |
| KAZ0130 | KAZ - stratum 30: Kyzyl-Ordinskaya oblast \ Kazakh\Russian \ |
| KAZ0131 | KAZ - stratum 31: Mangystauskaya oblast \ Kazakh \ non-intel |
| KAZ0132 | KAZ - stratum 32: Mangystauskaya oblast \ Russian \ non-inte |
| KAZ0133 | KAZ - stratum 33: Mangystauskaya oblast \ Kazakh\Russian \ n |
| KAZ0134 | KAZ - stratum 34: Pavlodarskaya oblast \ Kazakh \ non-intell |
| KAZ0135 | KAZ - stratum 35: Pavlodarskaya oblast \ Russian \ non-intel |
| KAZ0136 | KAZ - stratum 36: Pavlodarskaya oblast \ Kazakh\Russian \ no |
| KAZ0137 | KAZ - stratum 37: North-Kazakhstan oblast \ Kazakh \ non-int |
| KAZ0138 | KAZ - stratum 38: North-Kazakhstan oblast \ Russian \ non-in |
| KAZ0139 | KAZ - stratum 39: North-Kazakhstan oblast \ Kazakh\Russian \ |
| KAZ0140 | KAZ - stratum 40: South-Kazakhstan oblast \ Kazakh \ non-int |
| KAZ0141 | KAZ - stratum 41: South-Kazakhstan oblast \ Russian \ non-in |
| KAZ0142 | KAZ - stratum 42: South-Kazakhstan oblast \ Kazakh\Russian \ |
| KAZ0143 | KAZ - stratum 43: Almaty city \ Kazakh \ non-intellectual |
| KAZ0144 | KAZ - stratum 44: Almaty city \ Russian \ non-intellectual |
| KAZ0145 | KAZ - stratum 45: Almaty city \ Kazakh\Russian \ non-intelle |
| KAZ0146 | KAZ - stratum 46: Astana city \ Kazakh \ non-intellectual |
| KAZ0147 | KAZ - stratum 47: Astana city \ Russian \ non-intellectual |
| KAZ0148 | KAZ - stratum 48: Astana city \ Kazakh\Russian \ non-intelle |
| KAZ0249 | KAZ - stratum 49: N\A \ Kazakh\Russian \ intellectual |
| KAZ9797 | Undisclosed STRATUM - Kazakhstan |
| KOR0101 | KOR - stratum 01: Lower Secondary,General -- 01 |
| KOR0202 | KOR - stratum 02: Upper Secondary,general -- 02 |
| KOR0302 | KOR - stratum 02: Upper Secondary,general -- 02 |
| KOR0403 | KOR - stratum 03: Upper Secondary,vocational -- 03 |
| KOR9797 | Undisclosed STRATUM - Korea |
| KSV0001 | KSV - stratum 01: Ferizaj \ Rural |
| KSV0002 | KSV - stratum 02: Ferizaj\ Urban |
| KSV0003 | KSV - stratum 03: Gjakova\Rural |
| KSV0004 | KSV - stratum 04: Gjakova\Urban |
| KSV0005 | KSV - stratum 05: Gjilani\Rural |
| KSV0006 | KSV - stratum 06: Gjilani\Urban |
| KSV0007 | KSV - stratum 07: Mitrovica\Rural |
| KSV0008 | KSV - stratum 08: Mitrovica\Urban |
| KSV0009 | KSV - stratum 09: Peja\Rural |
| KSV0010 | KSV - stratum 10: Peja\Urban |
| KSV0011 | KSV - stratum 11: Prishtina\Rural |
| KSV0012 | KSV - stratum 12: Prishtina\Urban |
| KSV0013 | KSV - stratum 13: Prizreni\Rural |
| KSV0014 | KSV - stratum 14: Prizreni\Urban |
| KSV9797 | Undisclosed STRATUM - Kosovo |
| LBN0001 | LBN - stratum 01: ISCED2AG,Private,Rural -- 1 |
| LBN0002 | LBN - stratum 02: ISCED2AG,Private,Urban -- 2 |
| LBN0003 | LBN - stratum 03: ISCED2AG,Public,Rural -- 3 |
| LBN0004 | LBN - stratum 04: ISCED2AG,Public,Urban -- 4 |
| LBN0005 | LBN - stratum 05: MIXED,Private,Rural -- 5 |
| LBN0006 | LBN - stratum 06: MIXED,Private,Urban -- 6 |
| LBN0007 | LBN - stratum 07: MIXED,Public,Rural -- 7 |
| LBN0008 | LBN - stratum 08: MIXED,Public,Urban -- 8 |
| LBN0009 | LBN - stratum 09: ISCED3AG,Private,Rural -- 9 |
| LBN0010 | LBN - stratum 10: ISCED3AG,Private,Urban -- 10 |
| LBN0011 | LBN - stratum 11: ISCED3AG,Public,Rural -- 11 |
| LBN0012 | LBN - stratum 12: ISCED3AG,Public,Urban -- 12 |
| LBN9797 | Undisclosed STRATUM - Lebanon |
| LTU0101 | LTU - stratum 01: Lithuanian \ Capital \ Gymnasium |
| LTU0102 | LTU - stratum 02: Lithuanian \ Capital \ Secondary |
| LTU0103 | LTU - stratum 03: Lithuanian \ Capital \ basic |
| LTU0104 | LTU - stratum 04: Lithuanian \ Capital \ progymnasium |
| LTU0105 | LTU - stratum 05: Lithuanian \ Capital \ other |
| LTU0106 | LTU - stratum 06: Lithuanian \ City \ Gymnasium |
| LTU0107 | LTU - stratum 07: Lithuanian \ City \ Secondary |
| LTU0108 | LTU - stratum 08: Lithuanian \ City \ basic |
| LTU0109 | LTU - stratum 09: Lithuanian \ City \ progymnasium |
| LTU0110 | LTU - stratum 10: Lithuanian \ City \ other |
| LTU0111 | LTU - stratum 11: Lithuanian \ town \ Gymnasium |
| LTU0112 | LTU - stratum 12: Lithuanian \ town \ Secondary |
| LTU0113 | LTU - stratum 13: Lithuanian \ town \ basic |
| LTU0114 | LTU - stratum 14: Lithuanian \ town \ progymnasium |
| LTU0115 | LTU - stratum 15: Lithuanian \ town \ other |
| LTU0116 | LTU - stratum 16: Lithuanian \ village \ Gymnasium |
| LTU0117 | LTU - stratum 17: Lithuanian \ village \ Secondary |
| LTU0118 | LTU - stratum 18: Lithuanian \ village \ basic |
| LTU0119 | LTU - stratum 19: Lithuanian \ village \ progymnasium |
| LTU0120 | LTU - stratum 20: Lithuanian \ village \ other |
| LTU0221 | LTU - stratum 21: Russian \ NA \ NA |
| LTU0322 | LTU - stratum 22: Polish \ NA \ NA |
| LTU0423 | LTU - stratum 23: Russian, Polish \ NA \ NA |
| LTU0524 | LTU - stratum 24: Other multi-language \ NA \ NA |
| LTU9797 | Undisclosed STRATUM - Lithuania |
| LUX0101 | LUX - stratum 01: 1: ES government public |
| LUX0102 | LUX - stratum 02: 2: EST government public |
| LUX0103 | LUX - stratum 03: 3: ES+EST government public |
| LUX0104 | LUX - stratum 04: 4: EST government private |
| LUX0105 | LUX - stratum 05: 5: ES+EST government private |
| LUX0106 | LUX - stratum 06: 6: Government independent |
| LUX9797 | Undisclosed STRATUM - Luxembourg |
| LVA0001 | LVA - stratum 01: Riga |
| LVA0002 | LVA - stratum 02: City |
| LVA0003 | LVA - stratum 03: Town |
| LVA0004 | LVA - stratum 04: Rural |
| LVA9797 | Undisclosed STRATUM - Latvia |
| MAC0001 | MAC - stratum 01: Government, Grammar-International, Chinese |
| MAC0002 | MAC - stratum 02: Government, Technical-Vocational, Chinese |
| MAC0003 | MAC - stratum 03: Private-in-Net, Grammar-International, Chi |
| MAC0004 | MAC - stratum 04: Private-in-Net, Grammar-International, Eng |
| MAC0005 | MAC - stratum 05: Private-in-Net, Grammar-International, Chi |
| MAC0006 | MAC - stratum 06: Private-in-Net, Technical-Vocational, Chin |
| MAC0007 | MAC - stratum 07: Private-not- in-Net, Grammar-International |
| MAC0008 | MAC - stratum 08: Private-not-in-Net, Grammar-International, |
| MAC0009 | MAC - stratum 09: Private-not-in-Net, Grammar-International, |
| MAC0010 | MAC - stratum 10: Private-not- in-Net, Grammar-International |
| MAC9797 | Undisclosed STRATUM - Macao |
| MDA0001 | MDA - stratum 01: Romanian\Big city\Mixed |
| MDA0002 | MDA - stratum 02: Romanian\Big city\ISCED2 |
| MDA0003 | MDA - stratum 03: Romanian\Big city\ISCED3 |
| MDA0004 | MDA - stratum 04: Romanian\Urban\Mixed |
| MDA0005 | MDA - stratum 05: Romanian\Urban\ISCED2 |
| MDA0006 | MDA - stratum 06: Romanian\Urban\ISCED3 |
| MDA0007 | MDA - stratum 07: Romanian\Rural\Mixed |
| MDA0008 | MDA - stratum 08: Romanian\Rural\ISCED2 |
| MDA0009 | MDA - stratum 09: Romanian\Rural\ISCED3 |
| MDA0010 | MDA - stratum 10: Russian\Big city\Mixed |
| MDA0011 | MDA - stratum 11: Russian\Big city\ISCED2 |
| MDA0012 | MDA - stratum 12: Russian\Big city\ISCED3 |
| MDA0013 | MDA - stratum 13: Russian\Urban\Mixed |
| MDA0014 | MDA - stratum 14: Russian\Urban\ISCED2 |
| MDA0015 | MDA - stratum 15: Russian\Urban\ISCED3 |
| MDA0016 | MDA - stratum 16: Russian\Rural\Mixed |
| MDA0017 | MDA - stratum 17: Russian\Rural\ISCED2 |
| MDA0018 | MDA - stratum 18: Russian\Rural\ISCED3 |
| MDA0019 | MDA - stratum 19: Mixed\Big city\Mixed |
| MDA0020 | MDA - stratum 20: Mixed\Big city\ISCED2 |
| MDA0021 | MDA - stratum 21: Mixed\Big city\ISCED3 |
| MDA0022 | MDA - stratum 22: Mixed\Urban\Mixed |
| MDA0023 | MDA - stratum 23: Mixed\Urban\ISCED2 |
| MDA0024 | MDA - stratum 24: Mixed\Urban\ISCED3 |
| MDA0025 | MDA - stratum 25: Mixed\Rural\Mixed |
| MDA0026 | MDA - stratum 26: Mixed\Rural\ISCED2 |
| MDA0027 | MDA - stratum 27: Mixed\Rural\ISCED3 |
| MDA9797 | Undisclosed STRATUM - Moldova |
| MEX0001 | MEX - stratum 01: Lower Secondary \ Large |
| MEX0002 | MEX - stratum 02: Lower Secondary \ Moderately Small |
| MEX0003 | MEX - stratum 03: Lower Secondary \ Small |
| MEX0004 | MEX - stratum 04: Upper Secondary \ Large |
| MEX0005 | MEX - stratum 05: Upper Secondary \ Moderately Small |
| MEX0006 | MEX - stratum 06: Upper Secondary \ Small |
| MEX9797 | Undisclosed STRATUM - Mexico |
| MKD0001 | MKD - stratum 01: ISCED2\General |
| MKD0002 | MKD - stratum 02: ISCED3\Vocational |
| MKD0003 | MKD - stratum 03: ISCED3\General |
| MKD0004 | MKD - stratum 04: ISCED3\Mixed |
| MKD9797 | Undisclosed STRATUM - FYROM |
| MLT0001 | MLT - stratum 01: Church |
| MLT0002 | MLT - stratum 02: Independent |
| MLT0003 | MLT - stratum 03: State \ Category A |
| MLT0004 | MLT - stratum 04: State \ Category A + Category B |
| MLT0005 | MLT - stratum 05: State \ Category A+ Category B + Category |
| MLT0006 | MLT - stratum 06: State \ Category A + Category C |
| MLT0007 | MLT - stratum 07: State \ Category B + Category C |
| MLT0008 | MLT - stratum 08: State \ Category C |
| MLT0009 | MLT - stratum 09: State \ NA |
| MLT9797 | Undisclosed STRATUM - Malta |
| MNE0001 | MNE - stratum 01: Primary-Central |
| MNE0002 | MNE - stratum 02: Primary-North |
| MNE0003 | MNE - stratum 03: Primary-South |
| MNE0004 | MNE - stratum 04: Gimnazija-Central |
| MNE0005 | MNE - stratum 05: Gimnazija -North |
| MNE0006 | MNE - stratum 06: Gimnazija -South |
| MNE0007 | MNE - stratum 07: Vocational-Central |
| MNE0008 | MNE - stratum 08: Vocational-North |
| MNE0009 | MNE - stratum 09: Vocational-South |
| MNE0010 | MNE - stratum 10: Mixed-North |
| MNE0011 | MNE - stratum 11: Mixed-South |
| MNE9797 | Undisclosed STRATUM - Montenegro |
| MYS0101 | MYS - stratum 01: MOE National Secondary School\Other States |
| MYS0202 | MYS - stratum 02: MOE Religious School\Other States |
| MYS0203 | MYS - stratum 03: MOE Technical School\Other States |
| MYS0204 | MYS - stratum 04: MOE Fully Residential School |
| MYS0205 | MYS - stratum 05: non-MOE MARA Junior Science College\Other |
| MYS0206 | MYS - stratum 06: non-MOE Other Schools\Other States |
| MYS0207 | MYS - stratum 07: Perlis non-“MOE Fully Residential Schools” |
| MYS0208 | MYS - stratum 08: Wilayah Persekutuan Putrajaya non-“MOE Ful |
| MYS0209 | MYS - stratum 09: Wilayah Persekutuan Labuan non-“MOE Fully |
| MYS9797 | Undisclosed STRATUM - Malaysia |
| NLD0001 | NLD - stratum 01: 01_PRO\VMBO |
| NLD0002 | NLD - stratum 02: 02_HAVO\VWO |
| NLD0003 | NLD - stratum 03: 03_PrivateEducation |
| NLD9797 | Undisclosed STRATUM - Netherlands |
| NOR0001 | NOR - stratum 01: Lower secondary schools |
| NOR0002 | NOR - stratum 02: Upper secondary schools |
| NOR0003 | NOR - stratum 03: Mixed\Both |
| NOR9797 | Undisclosed STRATUM - Norway |
| NZL0101 | NZL - stratum 01: Small (<25) |
| NZL0102 | NZL - stratum 02: Medium (25-200) |
| NZL0203 | NZL - stratum 03: Large (>200) |
| NZL9797 | Undisclosed STRATUM - New Zealand |
| PER0001 | PER - stratum 01: Public\Urban\Modal grade |
| PER0002 | PER - stratum 02: Public\Urban\No modal grade |
| PER0003 | PER - stratum 03: Public\Rural\Modal grade |
| PER0004 | PER - stratum 04: Public\Rural\No modal grade |
| PER0005 | PER - stratum 05: Private\Urban\Modal grade |
| PER0006 | PER - stratum 06: Private\Urban\No modal grade |
| PER0007 | PER - stratum 07: Private\Rural\Modal grade |
| PER0008 | PER - stratum 08: Private\Rural\No modal grade |
| PER9797 | Undisclosed STRATUM - Peru |
| POL0001 | POL - stratum 01: 1 - Gymnasium |
| POL0002 | POL - stratum 02: 2 - Lycee |
| POL0003 | POL - stratum 03: 3 - Vocational |
| POL9797 | Undisclosed STRATUM - Poland |
| PRT0001 | PRT - stratum 01: Alentejo Central,Modal Grade -- 1 |
| PRT0002 | PRT - stratum 02: Alentejo Central,Non Modal grade -- 2 |
| PRT0003 | PRT - stratum 03: Alentejo Litoral,Modal Grade -- 3 |
| PRT0004 | PRT - stratum 04: Alentejo Litoral,Non Modal grade -- 4 |
| PRT0005 | PRT - stratum 05: Algarve,Modal Grade -- 5 |
| PRT0006 | PRT - stratum 06: Algarve,Non Modal grade -- 6 |
| PRT0007 | PRT - stratum 07: Alto Alentejo,Modal Grade -- 7 |
| PRT0008 | PRT - stratum 08: Alto Alentejo,Non Modal grade -- 8 |
| PRT0009 | PRT - stratum 09: Alto Minho,Modal Grade -- 9 |
| PRT0010 | PRT - stratum 10: Alto Minho,Non Modal grade -- 10 |
| PRT0011 | PRT - stratum 11: Alto Tâmega,Modal Grade -- 11 |
| PRT0012 | PRT - stratum 12: Alto Tâmega,Non Modal grade -- 12 |
| PRT0013 | PRT - stratum 13: Área Metropolitana de Lisboa,Modal Grade - |
| PRT0014 | PRT - stratum 14: Área Metropolitana de Lisboa,Non Modal gra |
| PRT0015 | PRT - stratum 15: Área Metropolitana do Porto,Modal Grade -- |
| PRT0016 | PRT - stratum 16: Área Metropolitana do Porto,Non Modal grad |
| PRT0017 | PRT - stratum 17: Ave,Modal Grade -- 17 |
| PRT0018 | PRT - stratum 18: Ave,Non Modal grade -- 18 |
| PRT0019 | PRT - stratum 19: Baixo Alentejo,Modal Grade -- 19 |
| PRT0020 | PRT - stratum 20: Baixo Alentejo,Non Modal grade -- 20 |
| PRT0021 | PRT - stratum 21: Beira Baixa,Modal Grade -- 21 |
| PRT0022 | PRT - stratum 22: Beira Baixa,Non Modal grade -- 22 |
| PRT0023 | PRT - stratum 23: Beiras e Serra da Estrela,Modal Grade -- 2 |
| PRT0024 | PRT - stratum 24: Beiras e Serra da Estrela,Non Modal grade |
| PRT0025 | PRT - stratum 25: Cávado,Modal Grade -- 25 |
| PRT0026 | PRT - stratum 26: Cávado,Non Modal grade -- 26 |
| PRT0027 | PRT - stratum 27: Douro,Modal Grade -- 27 |
| PRT0028 | PRT - stratum 28: Douro,Non Modal grade -- 28 |
| PRT0029 | PRT - stratum 29: Lezíria do Tejo,Modal Grade -- 29 |
| PRT0030 | PRT - stratum 30: Lezíria do Tejo,Non Modal grade -- 30 |
| PRT0031 | PRT - stratum 31: Médio Tejo,Modal Grade -- 31 |
| PRT0032 | PRT - stratum 32: Médio Tejo,Non Modal grade -- 32 |
| PRT0033 | PRT - stratum 33: Oeste,Modal Grade -- 33 |
| PRT0034 | PRT - stratum 34: Oeste,Non Modal grade -- 34 |
| PRT0035 | PRT - stratum 35: R. A. Madeira,Modal Grade -- 35 |
| PRT0036 | PRT - stratum 36: R. A. Madeira,Non Modal grade -- 36 |
| PRT0037 | PRT - stratum 37: R. A. Açores,Modal Grade -- 37 |
| PRT0038 | PRT - stratum 38: R. A. Açores,Non Modal grade -- 38 |
| PRT0039 | PRT - stratum 39: Região de Aveiro,Modal Grade -- 39 |
| PRT0040 | PRT - stratum 40: Região de Aveiro,Non Modal grade -- 40 |
| PRT0041 | PRT - stratum 41: Região de Coimbra,Modal Grade -- 41 |
| PRT0042 | PRT - stratum 42: Região de Coimbra,Non Modal grade -- 42 |
| PRT0043 | PRT - stratum 43: Região de Leiria,Modal Grade -- 43 |
| PRT0044 | PRT - stratum 44: Região de Leiria,Non Modal grade -- 44 |
| PRT0045 | PRT - stratum 45: Tâmega e Sousa,Modal Grade -- 45 |
| PRT0046 | PRT - stratum 46: Tâmega e Sousa,Non Modal grade -- 46 |
| PRT0047 | PRT - stratum 47: Terras de Trás-os-Montes,Modal Grade -- 47 |
| PRT0048 | PRT - stratum 48: Terras de Trás-os-Montes,Non Modal grade - |
| PRT0049 | PRT - stratum 49: Viseu Dão Lafões,Modal Grade -- 49 |
| PRT0050 | PRT - stratum 50: Viseu Dão Lafões,Non Modal grade -- 50 |
| PRT9797 | Undisclosed STRATUM - Portugal |
| QAT0101 | QAT - region 01 stratum 01: Independent |
| QAT0102 | QAT - region 01 stratum 02: Independent complex |
| QAT0103 | QAT - region 01 stratum 03: Community |
| QAT0104 | QAT - region 01 stratum 04: International |
| QAT0105 | QAT - region 01 stratum 05: Private |
| QAT0106 | QAT - region 01 stratum 06: Private complex |
| QAT0201 | QAT - region 02 stratum 01: Independent |
| QAT0202 | QAT - region 02 stratum 02: Independent complex |
| QAT0203 | QAT - region 02 stratum 03: Community |
| QAT0204 | QAT - region 02 stratum 04: International |
| QAT0205 | QAT - region 02 stratum 05: Private |
| QAT0206 | QAT - region 02 stratum 06: Private complex |
| QAT9797 | Undisclosed STRATUM - Qatar |
| QCH0101 | QCH - stratum 01: Beijing_Fangshan\Rural\Academic\ISCED2 |
| QCH0102 | QCH - stratum 02: Beijing_Fangshan\Rural\Academic\ISCED3 |
| QCH0103 | QCH - stratum 03: Beijing_Fangshan\Rural\Academic\Mixed |
| QCH0104 | QCH - stratum 04: Beijing_Fangshan\Rural\Vocational\ISCED3 |
| QCH0105 | QCH - stratum 05: Beijing_Fangshan\Town\Academic\ISCED2 |
| QCH0106 | QCH - stratum 06: Beijing_Fangshan\Town\Academic\ISCED3 |
| QCH0107 | QCH - stratum 07: Beijing_Fangshan\Town\Academic\Mixed |
| QCH0108 | QCH - stratum 08: Beijing_Fangshan\Town\Vocational\ISCED3 |
| QCH0209 | QCH - stratum 09: Beijing_other\City\Academic\ISCED2 |
| QCH0210 | QCH - stratum 10: Beijing_other\City\Academic\ISCED3 |
| QCH0211 | QCH - stratum 11: Beijing_other\City\Academic\Mixed |
| QCH0212 | QCH - stratum 12: Beijing_other\City\Vocational\ISCED3 |
| QCH0213 | QCH - stratum 13: Beijing_other\Rural\Academic\ISCED2 |
| QCH0214 | QCH - stratum 14: Beijing_other\Rural\Academic\ISCED3 |
| QCH0215 | QCH - stratum 15: Beijing_other\Rural\Academic\Mixed |
| QCH0216 | QCH - stratum 16: Beijing_other\Town\Academic\ISCED2 |
| QCH0217 | QCH - stratum 17: Beijing_other\Town\Academic\ISCED3 |
| QCH0218 | QCH - stratum 18: Beijing_other\Town\Academic\Mixed |
| QCH0219 | QCH - stratum 19: Beijing_other\Town\Vocational\ISCED3 |
| QCH0320 | QCH - stratum 20: Guangdong\City\Academic\ISCED2 |
| QCH0321 | QCH - stratum 21: Guangdong \City\Academic\ISCED3 |
| QCH0322 | QCH - stratum 22: Guangdong\City\Academic\Mixed |
| QCH0323 | QCH - stratum 23: Guangdong \City\Vocational\ISCED3 |
| QCH0324 | QCH - stratum 24: Guangdong\Rural\Academic\ISCED2 |
| QCH0325 | QCH - stratum 25: Guangdong \Rural\Academic\ISCED3 |
| QCH0326 | QCH - stratum 26: Guangdong\Rural\Academic\Mixed |
| QCH0327 | QCH - stratum 27: Guangdong \Rural\Vocational\ISCED3 |
| QCH0328 | QCH - stratum 28: Guangdong\Town\Academic\ISCED2 |
| QCH0329 | QCH - stratum 29: Guangdong \Town\Academic\ISCED3 |
| QCH0330 | QCH - stratum 30: Guangdong\Town\Academic\Mixed |
| QCH0331 | QCH - stratum 31: Guangdong \Town\Vocational\ISCED3 |
| QCH0432 | QCH - stratum 32: Jiangsu\City\Academic\ISCED2 |
| QCH0433 | QCH - stratum 33: Jiangsu \City\Academic\ISCED3 |
| QCH0434 | QCH - stratum 34: Jiangsu\City\Academic\Mixed |
| QCH0435 | QCH - stratum 35: Jiangsu \City\Vocational\ISCED3 |
| QCH0436 | QCH - stratum 36: Jiangsu\Rural\Academic\ISCED2 |
| QCH0437 | QCH - stratum 37: Jiangsu \Rural\Academic\ISCED3 |
| QCH0438 | QCH - stratum 38: Jiangsu\Rural\Academic\Mixed |
| QCH0439 | QCH - stratum 39: Jiangsu \Rural\Vocational\ISCED3 |
| QCH0440 | QCH - stratum 40: Jiangsu\Town\Academic\ISCED2 |
| QCH0441 | QCH - stratum 41: Jiangsu \Town\Academic\ISCED3 |
| QCH0442 | QCH - stratum 42: Jiangsu\Town\Academic\Mixed |
| QCH0443 | QCH - stratum 43: Jiangsu \Town\Vocational\ISCED3 |
| QCH0544 | QCH - stratum 44: Shanghai\City\Academic\ISCED2 |
| QCH0545 | QCH - stratum 45: Shanghai \City\Academic\ISCED3 |
| QCH0546 | QCH - stratum 46: Shanghai\City\Academic\Mixed |
| QCH0547 | QCH - stratum 47: Shanghai \City\Vocational\ISCED3 |
| QCH0548 | QCH - stratum 48: Shanghai\Rural\Academic\ISCED2 |
| QCH0549 | QCH - stratum 49: Shanghai \Rural\Academic\ISCED3 |
| QCH0550 | QCH - stratum 50: Shanghai\Rural\Academic\Mixed |
| QCH0551 | QCH - stratum 51: Shanghai\Town\Academic\ISCED2 |
| QCH0552 | QCH - stratum 52: Shanghai \Town\Academic\ISCED3 |
| QCH0553 | QCH - stratum 53: Shanghai\Town\Academic\Mixed |
| QCH9797 | Undisclosed STRATUM - China (B-S-J-G) |
| QCY0001 | QCY - stratum 01: General,Public,Urban -- 1 |
| QCY0002 | QCY - stratum 02: General,Public,Rural -- 2 |
| QCY0003 | QCY - stratum 03: General,Private,Urban -- 3 |
| QCY0004 | QCY - stratum 04: General,Private,Rural -- 4 |
| QCY0005 | QCY - stratum 05: Vocational,Public,Urban -- 5 |
| QCY0006 | QCY - stratum 06: Vocational,Public,Rural -- 6 |
| QCY0007 | QCY - stratum 07: Vocational,Private,Urban -- 7 |
| QCY0008 | QCY - stratum 08: Mixed,Public,Rural -- 8 |
| QCY9797 | Undisclosed STRATUM - Cyprus |
| QES0101 | QES - stratum 01: Andalusia, public, NA |
| QES0102 | QES - stratum 02: Andalusia, private, NA |
| QES0203 | QES - stratum 03: Aragon, public, NA |
| QES0204 | QES - stratum 04: Aragon, private, NA |
| QES0305 | QES - stratum 05: Asturias, public, NA |
| QES0306 | QES - stratum 06: Asturias, private, NA |
| QES0407 | QES - stratum 07: Balearic Islands, public, NA |
| QES0408 | QES - stratum 08: Balearic Islands, private, NA |
| QES0509 | QES - stratum 09: Canary Islands, public, NA |
| QES0510 | QES - stratum 10: Canary Islands, private, NA |
| QES0611 | QES - stratum 11: Cantabria, public, NA |
| QES0612 | QES - stratum 12: Cantabria, private, NA |
| QES0713 | QES - stratum 13: Castile and Leon, public, NA |
| QES0714 | QES - stratum 14: Castile and Leon, private, NA |
| QES0815 | QES - stratum 15: Castile - La Mancha, public, NA |
| QES0816 | QES - stratum 16: Castile - La Mancha, private, NA |
| QES0917 | QES - stratum 17: Catalonia, public, NA |
| QES0918 | QES - stratum 18: Catalonia, private, NA |
| QES1019 | QES - stratum 19: Extremadura, public, NA |
| QES1020 | QES - stratum 20: Extremadura, private, NA |
| QES1121 | QES - stratum 21: Galicia, public, NA |
| QES1122 | QES - stratum 22: Galicia, private, NA |
| QES1223 | QES - stratum 23: La Rioja, public, NA |
| QES1224 | QES - stratum 24: La Rioja, private, NA |
| QES1325 | QES - stratum 25: Madrid, public, NA |
| QES1326 | QES - stratum 26: Madrid, private, NA |
| QES1427 | QES - stratum 27: Murcia, public, NA |
| QES1428 | QES - stratum 28: Murcia, private, NA |
| QES1529 | QES - stratum 29: Navarra, public, NA |
| QES1530 | QES - stratum 30: Navarra, private, NA |
| QES1631 | QES - stratum 31: Basque Country, public, A |
| QES1632 | QES - stratum 32: Basque Country, public, B |
| QES1633 | QES - stratum 33: Basque Country, public, D |
| QES1634 | QES - stratum 34: Basque Country, private, A |
| QES1635 | QES - stratum 35: Basque Country, private, B |
| QES1636 | QES - stratum 36: Basque Country, private, D |
| QES1737 | QES - stratum 37: Valencia, public, NA |
| QES1738 | QES - stratum 38: Valencia, private, NA |
| QES9001 | QES - stratum 01: Andalusia, public, NA |
| QES9002 | QES - stratum 02: Andalusia, private, NA |
| QES9003 | QES - stratum 03: Aragon, public, NA |
| QES9004 | QES - stratum 04: Aragon, private, NA |
| QES9005 | QES - stratum 05: Asturias, public, NA |
| QES9006 | QES - stratum 06: Asturias, private, NA |
| QES9007 | QES - stratum 07: Balearic Islands, public, NA |
| QES9008 | QES - stratum 08: Balearic Islands, private, NA |
| QES9009 | QES - stratum 09: Canary Islands, public, NA |
| QES9010 | QES - stratum 10: Canary Islands, private, NA |
| QES9011 | QES - stratum 11: Cantabria, public, NA |
| QES9012 | QES - stratum 12: Cantabria, private, NA |
| QES9013 | QES - stratum 13: Castile and Leon, public, NA |
| QES9014 | QES - stratum 14: Castile and Leon, private, NA |
| QES9015 | QES - stratum 15: Castile - La Mancha, public, NA |
| QES9016 | QES - stratum 16: Castile - La Mancha, private, NA |
| QES9017 | QES - stratum 17: Catalonia, public, NA |
| QES9018 | QES - stratum 18: Catalonia, private, NA |
| QES9019 | QES - stratum 19: Extremadura, public, NA |
| QES9020 | QES - stratum 20: Extremadura, private, NA |
| QES9021 | QES - stratum 21: Galicia, public, NA |
| QES9022 | QES - stratum 22: Galicia, private, NA |
| QES9023 | QES - stratum 23: La Rioja, public, NA |
| QES9024 | QES - stratum 24: La Rioja, private, NA |
| QES9025 | QES - stratum 25: Madrid, public, NA |
| QES9026 | QES - stratum 26: Madrid, private, NA |
| QES9027 | QES - stratum 27: Murcia, public, NA |
| QES9028 | QES - stratum 28: Murcia, private, NA |
| QES9029 | QES - stratum 29: Navarra, public, NA |
| QES9030 | QES - stratum 30: Navarra, private, NA |
| QES9031 | QES - stratum 31: Basque Country, public, A |
| QES9032 | QES - stratum 32: Basque Country, public, B |
| QES9033 | QES - stratum 33: Basque Country, public, D |
| QES9034 | QES - stratum 34: Basque Country, private, A |
| QES9035 | QES - stratum 35: Basque Country, private, B |
| QES9036 | QES - stratum 36: Basque Country, private, D |
| QES9037 | QES - stratum 37: Valencia, public, NA |
| QES9038 | QES - stratum 38: Valencia, private, NA |
| QES9039 | QES - stratum 39: Ceuta and Melilla, public, NA |
| QES9040 | QES - stratum 40: Ceuta and Melilla, private, NA |
| QES9797 | Undisclosed STRATUM - Spain Regions |
| QSC9797 | Undisclosed STRATUM - Scotland |
| QUC0512 | Massachusetts (USA) - Stratum 12 |
| QUD0410 | QUD - stratum 10: Puerto Rico Private (USA) |
| QUD0411 | QUD - stratum 11: Puerto Rico Public (USA) |
| QUD9797 | Undisclosed STRATUM - Puerto Rico (USA) |
| QUE0614 | North Carolina (USA) - Stratum 14 |
| QUK9797 | Undisclosed STRATUM - United Kingdom |
| ROU0001 | ROU - stratum 01: 1. GIM |
| ROU0002 | ROU - stratum 02: 2. LIC |
| ROU9797 | Undisclosed STRATUM - Romania |
| RUS0003 | RUS - stratum 03: Republic of Bashkortostan |
| RUS0005 | RUS - stratum 05: Republic of Dagestan |
| RUS0007 | RUS - stratum 07: Kabardino-Balkarian Republic |
| RUS0014 | RUS - stratum 14: Republic of Sakha (Yakutia) |
| RUS0016 | RUS - stratum 16: Republic of Tatarstan |
| RUS0021 | RUS - stratum 21: Chuvashi Republic |
| RUS0022 | RUS - stratum 22: Altai territory |
| RUS0023 | RUS - stratum 23: Krasnodar territory |
| RUS0024 | RUS - stratum 24: Krasnoyarsk territory |
| RUS0025 | RUS - stratum 25: Primorsky territory |
| RUS0026 | RUS - stratum 26: Stavropol territory |
| RUS0029 | RUS - stratum 29: Arkhangelsk region |
| RUS0031 | RUS - stratum 31: Belgorod region |
| RUS0033 | RUS - stratum 33: Vladimir region |
| RUS0034 | RUS - stratum 34: Volgograd region |
| RUS0036 | RUS - stratum 36: Voronezh region |
| RUS0037 | RUS - stratum 37: Ivanovo region |
| RUS0038 | RUS - stratum 38: Irkutsk region |
| RUS0039 | RUS - stratum 39: Kaliningrad region |
| RUS0041 | RUS - stratum 41: Kamchatka territory |
| RUS0042 | RUS - stratum 42: Kemerovo region |
| RUS0044 | RUS - stratum 44: Kostroma region |
| RUS0048 | RUS - stratum 48: Lipetzk region |
| RUS0050 | RUS - stratum 50: Moscow region |
| RUS0052 | RUS - stratum 52: Nizhni Novgorod region |
| RUS0053 | RUS - stratum 53: Novgorod region |
| RUS0054 | RUS - stratum 54: Novosibirsk region |
| RUS0055 | RUS - stratum 55: Omsk region |
| RUS0056 | RUS - stratum 56: Orenburg region |
| RUS0059 | RUS - stratum 59: Perm territory |
| RUS0061 | RUS - stratum 61: Rostov region |
| RUS0062 | RUS - stratum 62: Ryazan region |
| RUS0063 | RUS - stratum 63: Samara region |
| RUS0064 | RUS - stratum 64: Saratov region |
| RUS0066 | RUS - stratum 66: Sverdlovsk region |
| RUS0070 | RUS - stratum 70: Tomsk region |
| RUS0073 | RUS - stratum 73: Ulyanovsk region |
| RUS0074 | RUS - stratum 74: Chelyabinsk region |
| RUS0077 | RUS - stratum 77: The City of Moscow |
| RUS0078 | RUS - stratum 78: The City of Sankt-Petersburg |
| RUS0086 | RUS - stratum 86: Khanty-Mansijsk autonomous district - Yugr |
| RUS0089 | RUS - stratum 89: Yamalo-Nenets autonomous district |
| RUS9797 | Undisclosed STRATUM - Russian Federation |
| SGP0101 | SGP - stratum 01: Public Secondary |
| SGP0201 | SGP - stratum 01: Public Secondary |
| SGP0202 | SGP - stratum 02: Public Post-Secondary |
| SGP0203 | SGP - stratum 03: Private Secondary |
| SGP9797 | Undisclosed STRATUM - Singapore |
| SVK0001 | SVK - stratum 01: ZS \ Region 1_ZAP |
| SVK0002 | SVK - stratum 02: ZS \ Region 2_STR |
| SVK0003 | SVK - stratum 03: ZS \ Region 3_ VÝCH |
| SVK0004 | SVK - stratum 04: GYM \ Region 1_ZAP |
| SVK0005 | SVK - stratum 05: GYM \ Region 2_STR |
| SVK0006 | SVK - stratum 06: GYM \ Region 3_ VÝCH |
| SVK0007 | SVK - stratum 07: others \ Region 1_ZAP |
| SVK0008 | SVK - stratum 08: others \ Region 2_STR |
| SVK0009 | SVK - stratum 09: others \ Region 3_ VÝCH |
| SVK9797 | Undisclosed STRATUM - Slovak Republic |
| SVN0101 | SVN - stratum 01: GIMg - gymnasia general |
| SVN0102 | SVN - stratum 02: GIMs - gymnasia specialist |
| SVN0103 | SVN - stratum 03: STSI - technical educational programmes |
| SVN0104 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN0105 | SVN - stratum 05: NPI - vocational of short duration |
| SVN0201 | SVN - stratum 01: GIMg - gymnasia general |
| SVN0202 | SVN - stratum 02: GIMs - gymnasia specialist |
| SVN0203 | SVN - stratum 03: STSI - technical educational programmes |
| SVN0204 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN0205 | SVN - stratum 05: NPI - vocational of short duration |
| SVN0301 | SVN - stratum 01: GIMg - gymnasia general |
| SVN0302 | SVN - stratum 02: GIMs - gymnasia specialist |
| SVN0303 | SVN - stratum 03: STSI - technical educational programmes |
| SVN0304 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN0305 | SVN - stratum 05: NPI - vocational of short duration |
| SVN0401 | SVN - stratum 01: GIMg - gymnasia general |
| SVN0403 | SVN - stratum 03: STSI - technical educational programmes |
| SVN0404 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN0405 | SVN - stratum 05: NPI - vocational of short duration |
| SVN0501 | SVN - stratum 01: GIMg - gymnasia general |
| SVN0503 | SVN - stratum 03: STSI - technical educational programmes |
| SVN0504 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN0505 | SVN - stratum 05: NPI - vocational of short duration |
| SVN0601 | SVN - stratum 01: GIMg - gymnasia general |
| SVN0602 | SVN - stratum 02: GIMs - gymnasia specialist |
| SVN0603 | SVN - stratum 03: STSI - technical educational programmes |
| SVN0604 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN0605 | SVN - stratum 05: NPI - vocational of short duration |
| SVN0701 | SVN - stratum 01: GIMg - gymnasia general |
| SVN0702 | SVN - stratum 02: GIMs - gymnasia specialist |
| SVN0703 | SVN - stratum 03: STSI - technical educational programmes |
| SVN0704 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN0705 | SVN - stratum 05: NPI - vocational of short duration |
| SVN0801 | SVN - stratum 01: GIMg - gymnasia general |
| SVN0802 | SVN - stratum 02: GIMs - gymnasia specialist |
| SVN0803 | SVN - stratum 03: STSI - technical educational programmes |
| SVN0804 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN0805 | SVN - stratum 05: NPI - vocational of short duration |
| SVN0901 | SVN - stratum 01: GIMg - gymnasia general |
| SVN0902 | SVN - stratum 02: GIMs - gymnasia specialist |
| SVN0903 | SVN - stratum 03: STSI - technical educational programmes |
| SVN0904 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN0905 | SVN - stratum 05: NPI - vocational of short duration |
| SVN1001 | SVN - stratum 01: GIMg - gymnasia general |
| SVN1002 | SVN - stratum 02: GIMs - gymnasia specialist |
| SVN1003 | SVN - stratum 03: STSI - technical educational programmes |
| SVN1004 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN1005 | SVN - stratum 05: NPI - vocational of short duration |
| SVN1101 | SVN - stratum 01: GIMg - gymnasia general |
| SVN1102 | SVN - stratum 02: GIMs - gymnasia specialist |
| SVN1103 | SVN - stratum 03: STSI - technical educational programmes |
| SVN1104 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN1105 | SVN - stratum 05: NPI - vocational of short duration |
| SVN1201 | SVN - stratum 01: GIMg - gymnasia general |
| SVN1203 | SVN - stratum 03: STSI - technical educational programmes |
| SVN1204 | SVN - stratum 04: SPI - vocational of medium duration |
| SVN1205 | SVN - stratum 05: NPI - vocational of short duration |
| SVN9006 | SVN - stratum 06: OS - elementary school |
| SVN9007 | SVN - stratum 07: IO - adult educational programme |
| SVN9797 | Undisclosed STRATUM - Slovenia |
| SWE0001 | SWE - stratum 01: PUB\LOWER SEC\METRO |
| SWE0002 | SWE - stratum 02: PUB\LOWER SEC\LARGE CITIES |
| SWE0003 | SWE - stratum 03: PUB\LOWER SEC\OTHER |
| SWE0004 | SWE - stratum 04: PUB\UPPER SEC |
| SWE0005 | SWE - stratum 05: INDEP\LOWER and mixed ISCED2 & ISCED3\METR |
| SWE0006 | SWE - stratum 06: INDEP\LOWER SEC\LARGE CITIES |
| SWE0007 | SWE - stratum 07: INDEP\LOWER SEC\OTHER |
| SWE0008 | SWE - stratum 08: INDEP\UPPER SEC |
| SWE9797 | Undisclosed STRATUM - Sweden |
| TAP0101 | TAP - stratum 01: general junior high school (1) \ Public (0 |
| TAP0102 | TAP - stratum 02: general junior high school (1) \ Private ( |
| TAP0103 | TAP - stratum 03: general senior high school (2) \ Public (0 |
| TAP0104 | TAP - stratum 04: general senior high school (2) \ Private ( |
| TAP0205 | TAP - stratum 05: vocational senior high school (3) \ Public |
| TAP0206 | TAP - stratum 06: vocational senior high school (3) \ Privat |
| TAP0207 | TAP - stratum 07: mixed general and vocational senior high s |
| TAP0208 | TAP - stratum 08: mixed general and vocational senior high s |
| TAP0309 | TAP - stratum 09: comprehensive high school (5) \ Public (0) |
| TAP0310 | TAP - stratum 10: comprehensive high school (5) \ Private (1 |
| TAP0311 | TAP - stratum 11: five-year college (6) \ Public (0) |
| TAP0312 | TAP - stratum 12: five-year college (6) \ Private (1) |
| TAP9797 | Undisclosed STRATUM - Chinese Taipei |
| THA0101 | THA - stratum 01: OBEC,ISCED2 only -- 01 |
| THA0102 | THA - stratum 02: OBEC,Mixed -- 02 |
| THA0103 | THA - stratum 03: OBEC,ISCED3 only -- 03 |
| THA0204 | THA - stratum 04: OPEC,ISCED2 only -- 04 |
| THA0205 | THA - stratum 05: OPEC,Mixed -- 05 |
| THA0206 | THA - stratum 06: OPEC,ISCED3 only -- 06 |
| THA0207 | THA - stratum 07: DBMA,ISCED2 only -- 07 |
| THA0208 | THA - stratum 08: DBMA,Mixed -- 08 |
| THA0209 | THA - stratum 09: BLDC,ISCED2 only -- 09 |
| THA0210 | THA - stratum 10: BLDC,Mixed -- 10 |
| THA0211 | THA - stratum 11: BLDC,ISCED3 only -- 11 |
| THA0212 | THA - stratum 12: OHEC,ISCED2 only -- 12 |
| THA0213 | THA - stratum 13: OHEC,Mixed -- 13 |
| THA0214 | THA - stratum 14: OVEC,ISCED3 only -- 14 |
| THA0215 | THA - stratum 15: SSMS,Mixed -- 15 |
| THA0216 | THA - stratum 16: SSMS,ISCED3 only -- 16 |
| THA9797 | Undisclosed STRATUM - Thailand |
| TTO0001 | TTO - stratum 01: Caroni\Secular |
| TTO0002 | TTO - stratum 02: Caroni\Religious |
| TTO0003 | TTO - stratum 03: Caroni\Private |
| TTO0004 | TTO - stratum 04: North Eastern\Secular |
| TTO0005 | TTO - stratum 05: North Eastern\Religious |
| TTO0006 | TTO - stratum 06: North Eastern\Private |
| TTO0007 | TTO - stratum 07: Port of Spain\Secular |
| TTO0008 | TTO - stratum 08: Port of Spain\Religious |
| TTO0009 | TTO - stratum 09: Port of Spain\Private |
| TTO0010 | TTO - stratum 10: St. George East\Secular |
| TTO0011 | TTO - stratum 11: St. George East\Religious |
| TTO0012 | TTO - stratum 12: St. George East\Private |
| TTO0013 | TTO - stratum 13: St. Patrick\Secular |
| TTO0014 | TTO - stratum 14: St. Patrick\Religious |
| TTO0016 | TTO - stratum 16: South Eastern\Secular |
| TTO0017 | TTO - stratum 17: South Eastern\Religious |
| TTO0018 | TTO - stratum 18: South Eastern\Private |
| TTO0019 | TTO - stratum 19: Victoria\Secular |
| TTO0020 | TTO - stratum 20: Victoria\Religious |
| TTO0021 | TTO - stratum 21: Victoria\Private |
| TTO0022 | TTO - stratum 22: Tobago\Secular |
| TTO0023 | TTO - stratum 23: Tobago\Religious |
| TTO9797 | Undisclosed STRATUM - Trinidad and Tobago |
| TUN0001 | TUN - stratum 01: North-east\Urban |
| TUN0002 | TUN - stratum 02: North-east\Periphery |
| TUN0003 | TUN - stratum 03: North-east\Rural |
| TUN0004 | TUN - stratum 04: North-west\Urban |
| TUN0005 | TUN - stratum 05: North-west \Periphery |
| TUN0006 | TUN - stratum 06: North-west \Rural |
| TUN0007 | TUN - stratum 07: South-east\Urban |
| TUN0008 | TUN - stratum 08: South-east\Periphery |
| TUN0009 | TUN - stratum 09: South-east\Rural |
| TUN0010 | TUN - stratum 10: South-west\Urban |
| TUN0011 | TUN - stratum 11: South-west\Periphery |
| TUN0012 | TUN - stratum 12: South-west\Rural |
| TUN0013 | TUN - stratum 13: Center-east\Urban |
| TUN0014 | TUN - stratum 14: Center-east\Periphery |
| TUN0015 | TUN - stratum 15: Center-east\Rural |
| TUN0016 | TUN - stratum 16: Center-west\Urban |
| TUN0017 | TUN - stratum 17: Center-west\Periphery |
| TUN0018 | TUN - stratum 18: Center-west\Rural |
| TUN9797 | Undisclosed STRATUM - Tunisia |
| TUR0101 | TUR - stratum 01: TR1 BASIC EDUCATION |
| TUR0102 | TUR - stratum 02: TR1 GENERAL SECONDARY |
| TUR0103 | TUR - stratum 03: TR1 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0104 | TUR - stratum 04: TR2 BASIC EDUCATION |
| TUR0105 | TUR - stratum 05: TR2 GENERAL SECONDARY |
| TUR0106 | TUR - stratum 06: TR2 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0107 | TUR - stratum 07: TR3 BASIC EDUCATION |
| TUR0108 | TUR - stratum 08: TR3 GENERAL SECONDARY |
| TUR0109 | TUR - stratum 09: TR3 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0110 | TUR - stratum 10: TR4 BASIC EDUCATION |
| TUR0111 | TUR - stratum 11: TR4 GENERAL SECONDARY |
| TUR0112 | TUR - stratum 12: TR4 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0213 | TUR - stratum 13: TR5 BASIC EDUCATION |
| TUR0214 | TUR - stratum 14: TR5 GENERAL SECONDARY |
| TUR0215 | TUR - stratum 15: TR5 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0216 | TUR - stratum 16: TR6 BASIC EDUCATION |
| TUR0217 | TUR - stratum 17: TR6 GENERAL SECONDARY |
| TUR0218 | TUR - stratum 18: TR6 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0219 | TUR - stratum 19: TR7 BASIC EDUCATION |
| TUR0220 | TUR - stratum 20: TR7 GENERAL SECONDARY |
| TUR0221 | TUR - stratum 21: TR7 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0222 | TUR - stratum 22: TR8 BASIC EDUCATION |
| TUR0223 | TUR - stratum 23: TR8 GENERAL SECONDARY |
| TUR0224 | TUR - stratum 24: TR8 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0225 | TUR - stratum 25: TR9 BASIC EDUCATION |
| TUR0226 | TUR - stratum 26: TR9 GENERAL SECONDARY |
| TUR0227 | TUR - stratum 27: TR9 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0228 | TUR - stratum 28: TRA BASIC EDUCATION |
| TUR0229 | TUR - stratum 29: TRA GENERAL SECONDARY |
| TUR0230 | TUR - stratum 30: TRA VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0231 | TUR - stratum 31: TRB BASIC EDUCATION |
| TUR0232 | TUR - stratum 32: TRB GENERAL SECONDARY |
| TUR0233 | TUR - stratum 33: TRB VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0234 | TUR - stratum 34: TRC BASIC EDUCATION |
| TUR0235 | TUR - stratum 35: TRC GENERAL SECONDARY |
| TUR0236 | TUR - stratum 36: TRC VOCATIONAL AND TECHNICAL SECONDARY |
| TUR9797 | Undisclosed STRATUM - Turkey |
| URY0001 | URY - stratum 01: Pub. Gen. Sec \ Lower secondary |
| URY0002 | URY - stratum 02: Pub. Gen. Sec \ Mixed |
| URY0003 | URY - stratum 03: Pub. Gen. Sec \Upper Secondary |
| URY0004 | URY - stratum 04: Pri. Gen. Sec \ Lower secondary |
| URY0005 | URY - stratum 05: Pri. Gen. Sec \ Mixed |
| URY0006 | URY - stratum 06: Pri. Gen. Sec \Upper Secondary |
| URY0007 | URY - stratum 07: Pub. Tech. Sec \ Lower secondary |
| URY0008 | URY - stratum 08: Pub. Tech. Sec \ Mixed |
| URY0009 | URY - stratum 09: Pub. Tech. Sec \Upper Secondary |
| URY0010 | URY - stratum 10: Rur. w. lower sec. degree \ Lower secondar |
| URY9797 | Undisclosed STRATUM - Uruguay |
| USA0101 | USA - stratum 01: USA Northeast Private |
| USA0102 | USA - stratum 02: USA Northeast Public, has gr10 |
| USA0103 | USA - stratum 03: USA Midwest Private |
| USA0104 | USA - stratum 04: USA Midwest Public, has gr10 |
| USA0205 | USA - stratum 05: USA South Private |
| USA0206 | USA - stratum 06: USA South Public, has gr10 |
| USA0307 | USA - stratum 07: USA West Private |
| USA0308 | USA - stratum 08: USA West Public, has gr10 |
| USA0309 | USA - stratum 09: USA Public, no grade 10 |
| USA9797 | Undisclosed STRATUM - United States |
| VNM0101 | VNM - stratum 01: Northern Vietnam,>50% public funding,Urban |
| VNM0102 | VNM - stratum 02: Northern Vietnam,>50% public funding,Rural |
| VNM0103 | VNM - stratum 03: Northern Vietnam,>50% public funding,Remot |
| VNM0104 | VNM - stratum 04: Northern Vietnam,<50% public funding,Urban |
| VNM0105 | VNM - stratum 05: Northern Vietnam,<50% public funding,Rural |
| VNM0207 | VNM - stratum 07: Central Vietnam,>50% public funding,Urban |
| VNM0208 | VNM - stratum 08: Central Vietnam,>50% public funding,Rural |
| VNM0209 | VNM - stratum 09: Central Vietnam,>50% public funding,Remote |
| VNM0210 | VNM - stratum 10: Central Vietnam,<50% public funding,Urban |
| VNM0211 | VNM - stratum 11: Central Vietnam,<50% public funding,Rural |
| VNM0313 | VNM - stratum 13: Southern Vietnam,>50% public funding,Urban |
| VNM0314 | VNM - stratum 14: Southern Vietnam,>50% public funding,Rural |
| VNM0315 | VNM - stratum 15: Southern Vietnam,>50% public funding,Remot |
| VNM0316 | VNM - stratum 16: Southern Vietnam,<50% public funding,Urban |
| VNM0317 | VNM - stratum 17: Southern Vietnam,<50% public funding,Rural |
| VNM9797 | Undisclosed STRATUM - Vietnam |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.