Programme for International Student Assessment 2012
Albania, United Arab Emirates, Argentina...and 57 more, 2012
Reference ID
WLD_2012_PISA_v01_M
Producer(s)
Organisation for Economic Co-operation and Development
Metadata
Created on
Sep 05, 2014
Last modified
Jun 14, 2022
Page views
64329
Downloads
16541
Stratum ID 7-character (cnt + region ID + original stratum ID) (STRATUM)
Data file: INT_SCQ12_DEC03
Overview
Valid:
18139
Invalid:
0
Type:
Discrete
Start:
11
End:
17
Width:
7
Range:
-
Format:
character
Questions and instructions
Categories
| Value | Category |
|---|---|
| ALB0001 | ALB - stratum 01 : North, Urban, Public |
| ALB0002 | ALB - stratum 02 : North, Urban, Private |
| ALB0003 | ALB - stratum 03 : North, Rural, Public |
| ALB0004 | ALB - stratum 04 : North, Rural, Private |
| ALB0005 | ALB - stratum 05 : Center, Urban, Public |
| ALB0006 | ALB - stratum 06 : Center, Urban, Private |
| ALB0007 | ALB - stratum 07 : Center, Rural, Public |
| ALB0008 | ALB - stratum 08 : Center, Rural, Private |
| ALB0009 | ALB - stratum 09 : South, Urban, Public |
| ALB0010 | ALB - stratum 10 : South, Urban, Private |
| ALB0011 | ALB - stratum 11 : South, Rural, Public |
| ALB0012 | ALB - stratum 12 : South, Rural, 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 |
| 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 |
| 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 |
| 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 |
| ARE0770 | ARE - stratum 70 : FUJAIRAH,OTHER,PRIVATE |
| ARE9797 | Undisclosed STRATUM - United Arab Emirates |
| ARG0001 | ARG - stratum 01 : Centro |
| ARG0003 | ARG - stratum 03 : NEA |
| ARG0004 | ARG - stratum 04 : NOA |
| ARG0005 | ARG - stratum 05 : Cuyo |
| ARG0006 | ARG - stratum 06 : Patagonia |
| ARG0102 | ARG - stratum 02 : CABA |
| ARG9797 | Undisclosed STRATUM - Argentina |
| AUS0101 | AUS - stratum 01 : ACT_Catholic |
| AUS0102 | AUS - stratum 02 : ACT_Government |
| AUS0103 | AUS - stratum 03 : ACT_Independent |
| AUS0204 | AUS - stratum 04 : NSW_Catholic |
| AUS0205 | AUS - stratum 05 : NSW_Government |
| AUS0206 | AUS - stratum 06 : NSW_Independent |
| AUS0307 | AUS - stratum 07 : VIC_Catholic |
| AUS0308 | AUS - stratum 08 : VIC_Government |
| AUS0309 | AUS - stratum 09 : VIC_Independent |
| AUS0410 | AUS - stratum 10 : QLD_Catholic |
| AUS0411 | AUS - stratum 11 : QLD_Government |
| AUS0412 | AUS - stratum 12 : QLD_Independent |
| AUS0513 | AUS - stratum 13 : SA_Catholic |
| AUS0514 | AUS - stratum 14 : SA_Government |
| AUS0515 | AUS - stratum 15 : SA_Independent |
| AUS0616 | AUS - stratum 16 : WA_Catholic |
| AUS0617 | AUS - stratum 17 : WA_Government |
| AUS0618 | AUS - stratum 18 : WA_Independent |
| AUS0719 | AUS - stratum 19 : TAS_Catholic |
| AUS0720 | AUS - stratum 20 : TAS_Government |
| AUS0721 | AUS - stratum 21 : TAS_Independent |
| AUS0822 | AUS - stratum 22 : NT_Catholic |
| AUS0823 | AUS - stratum 23 : NT_Government |
| AUS0824 | AUS - stratum 24 : NT_Independent |
| AUS9797 | Undisclosed STRATUM - Australia |
| AUT0001 | AUT - stratum 01 : TYPE 1 Pflichtschulen |
| AUT0002 | AUT - stratum 02 : TYPE 2 Polytechnische Schulen |
| AUT0003 | AUT - stratum 03 : TYPE 3 AHS-Langform |
| AUT0004 | AUT - stratum 04 : TYPE 4 AHS-Kurzform |
| AUT0005 | AUT - stratum 05 : TYPE 5 Schulen mit Statut - Waldorfschul |
| AUT0006 | AUT - stratum 06 : TYPE 6 Schulen mit Statut - Sonstige |
| AUT0007 | AUT - stratum 07 : TYPE 7 Berufsschulen kaufmännisch and g |
| AUT0008 | AUT - stratum 08 : TYPE 8 Berufsschulen landwirtschaftlich |
| AUT0009 | AUT - stratum 09 : TYPE 9 BMS gewerblich |
| AUT0010 | AUT - stratum 10 : TYPE 10 BMS kaufmännisch |
| AUT0011 | AUT - stratum 11 : TYPE 11 BMS wirtschaftlich |
| AUT0012 | AUT - stratum 12 : TYPE 12 BMS landwirtschaftlich |
| AUT0013 | AUT - stratum 13 : TYPE 13 BHS gewerblich |
| AUT0014 | AUT - stratum 14 : TYPE 14 BHS kaufmännisch |
| AUT0015 | AUT - stratum 15 : TYPE 15 BHS wirtschaftlich |
| AUT0016 | AUT - stratum 16 : TYPE 16 BHS landwirtschaftlich |
| AUT0017 | AUT - stratum 17 : TYPE 17 BAKIP |
| AUT9797 | Undisclosed STRATUM - Austria |
| BEL0101 | BEL - stratum 01 : Flanders/Gen Ed only/private subsidized/I |
| BEL0102 | BEL - stratum 02 : Flanders/Gen Ed only/private subsidized/I |
| BEL0103 | BEL - stratum 03 : Flanders/Gen Ed only/private subsidized/M |
| BEL0104 | BEL - stratum 04 : Flanders/Gen Ed only/network comm. Schls/ |
| BEL0105 | BEL - stratum 05 : Flanders/Gen Ed only/network comm. Schls/ |
| BEL0106 | BEL - stratum 06 : Flanders/Gen Ed only/network comm. Schls/ |
| BEL0107 | BEL - stratum 07 : Flanders/Gen Ed and other type/private su |
| BEL0108 | BEL - stratum 08 : Flanders/Gen Ed and other type/private su |
| BEL0109 | BEL - stratum 09 : Flanders/Gen Ed and other type/private su |
| BEL0110 | BEL - stratum 10 : Flanders/Gen Ed and other type/network co |
| BEL0111 | BEL - stratum 11 : Flanders/Gen Ed and other type/network co |
| BEL0112 | BEL - stratum 12 : Flanders/Gen Ed and other type/network co |
| BEL0113 | BEL - stratum 13 : Flanders/Tech or Voc/private subsidized/I |
| BEL0114 | BEL - stratum 14 : Flanders/Tech or Voc/private subsidized/I |
| BEL0115 | BEL - stratum 15 : Flanders/Tech or Voc/private subsidized/M |
| BEL0116 | BEL - stratum 16 : Flanders/Tech or Voc/network comm. Schls/ |
| BEL0117 | BEL - stratum 17 : Flanders/Tech or Voc/network comm. Schls/ |
| BEL0118 | BEL - stratum 18 : Flanders/Tech or Voc/network comm. Schls/ |
| BEL0119 | BEL - stratum 19 : Flanders/Special Ed/ private subsidized |
| BEL0120 | BEL - stratum 20 : Flanders/Special Ed/network comm. schls |
| BEL0121 | BEL - stratum 21 : Flanders/Part-time Vocational Ed/communit |
| BEL0222 | BEL - stratum 22 : French com/Regular/ISCED2 |
| BEL0223 | BEL - stratum 23 : French com/Regular/ Mixed ISCED/Academic |
| BEL0224 | BEL - stratum 24 : French com/Regular/ Mixed ISCED/Mixed |
| BEL0225 | BEL - stratum 25 : French com/Regular/ Mixed ISCED/Vocationa |
| BEL0226 | BEL - stratum 26 : French com/Special Ed |
| BEL0227 | BEL - stratum 27 : French com/Part-time Vocational Ed |
| BEL0328 | BEL - stratum 28 : German com/Regular |
| BEL0329 | BEL - stratum 29 : 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 : ACRE - FEDERAL/ESTADUAL |
| BRA0102 | BRA - stratum 02 : ACRE - MUNICIPAL |
| BRA0103 | BRA - stratum 03 : ACRE - PRIVADA |
| BRA0204 | BRA - stratum 04 : ALAGOAS - FEDERAL/ESTADUAL |
| BRA0205 | BRA - stratum 05 : ALAGOAS - MUNICIPAL |
| BRA0206 | BRA - stratum 06 : ALAGOAS - PRIVADA |
| BRA0307 | BRA - stratum 07 : AMAPÁ - FEDERAL/ESTADUAL |
| BRA0308 | BRA - stratum 08 : AMAPÁ - MUNICIPAL |
| BRA0309 | BRA - stratum 09 : AMAPÁ - PRIVADA |
| BRA0410 | BRA - stratum 10 : AMAZONAS - FEDERAL/ESTADUAL |
| BRA0411 | BRA - stratum 11 : AMAZONAS - MUNICIPAL |
| BRA0412 | BRA - stratum 12 : AMAZONAS - PRIVADA |
| BRA0513 | BRA - stratum 13 : BAHIA - FEDERAL/ESTADUAL |
| BRA0514 | BRA - stratum 14 : BAHIA - MUNICIPAL |
| BRA0515 | BRA - stratum 15 : BAHIA - PRIVADA |
| BRA0616 | BRA - stratum 16 : CEARÁ - FEDERAL/ESTADUAL |
| BRA0617 | BRA - stratum 17 : CEARÁ - MUNICIPAL |
| BRA0618 | BRA - stratum 18 : CEARÁ - PRIVADA |
| BRA0719 | BRA - stratum 19 : DISTRITO FEDERAL - FEDERAL/ESTADUAL |
| BRA0720 | BRA - stratum 20 : DISTRITO FEDERAL - PRIVADA |
| BRA0821 | BRA - stratum 21 : ESPÍRITO SANTO - FEDERAL/ESTADUAL |
| BRA0822 | BRA - stratum 22 : ESPÍRITO SANTO - MUNICIPAL |
| BRA0823 | BRA - stratum 23 : ESPÍRITO SANTO - PRIVADA |
| BRA0924 | BRA - stratum 24 : GOIÁS - FEDERAL/ESTADUAL |
| BRA0925 | BRA - stratum 25 : GOIÁS - MUNICIPAL |
| BRA0926 | BRA - stratum 26 : GOIÁS - PRIVADA |
| BRA1027 | BRA - stratum 27 : MARANHÃO - FEDERAL/ESTADUAL |
| BRA1028 | BRA - stratum 28 : MARANHÃO - MUNICIPAL |
| BRA1029 | BRA - stratum 29 : MARANHÃO - PRIVADA |
| BRA1130 | BRA - stratum 30 : MATO GROSSO - FEDERAL/ESTADUAL |
| BRA1131 | BRA - stratum 31 : MATO GROSSO - MUNICIPAL |
| BRA1132 | BRA - stratum 32 : MATO GROSSO - PRIVADA |
| BRA1233 | BRA - stratum 33 : MATO GROSSO DO SUL - FEDERAL/ESTADUAL |
| BRA1234 | BRA - stratum 34 : MATO GROSSO DO SUL - MUNICIPAL |
| BRA1235 | BRA - stratum 35 : MATO GROSSO DO SUL - PRIVADA |
| BRA1336 | BRA - stratum 36 : MINAS GERAIS - FEDERAL/ESTADUAL |
| BRA1337 | BRA - stratum 37 : MINAS GERAIS - MUNICIPAL |
| BRA1338 | BRA - stratum 38 : MINAS GERAIS - PRIVADA |
| BRA1439 | BRA - stratum 39 : PARÁ - FEDERAL/ESTADUAL |
| BRA1440 | BRA - stratum 40 : PARÁ - MUNICIPAL |
| BRA1441 | BRA - stratum 41 : PARÁ - PRIVADA |
| BRA1542 | BRA - stratum 42 : PARAÍBA - FEDERAL/ESTADUAL |
| BRA1543 | BRA - stratum 43 : PARAÍBA - MUNICIPAL |
| BRA1544 | BRA - stratum 44 : PARAÍBA - PRIVADA |
| BRA1645 | BRA - stratum 45 : PARANÁ - FEDERAL/ESTADUAL |
| BRA1646 | BRA - stratum 46 : PARANÁ - MUNICIPAL |
| BRA1647 | BRA - stratum 47 : PARANÁ - PRIVADA |
| BRA1748 | BRA - stratum 48 : PERNAMBUCO - FEDERAL/ESTADUAL |
| BRA1749 | BRA - stratum 49 : PERNAMBUCO - MUNICIPAL |
| BRA1750 | BRA - stratum 50 : PERNAMBUCO - PRIVADA |
| BRA1851 | BRA - stratum 51 : PIAUÍ - FEDERAL/ESTADUAL |
| BRA1852 | BRA - stratum 52 : PIAUÍ - MUNICIPAL |
| BRA1853 | BRA - stratum 53 : PIAUÍ - PRIVADA |
| BRA1954 | BRA - stratum 54 : RIO DE JANEIRO - FEDERAL/ESTADUAL |
| BRA1955 | BRA - stratum 55 : RIO DE JANEIRO - MUNICIPAL |
| BRA1956 | BRA - stratum 56 : RIO DE JANEIRO - PRIVADA |
| BRA2057 | BRA - stratum 57 : RIO GRANDE DO NORTE - FEDERAL/ESTADUAL |
| BRA2058 | BRA - stratum 58 : RIO GRANDE DO NORTE - MUNICIPAL |
| BRA2059 | BRA - stratum 59 : RIO GRANDE DO NORTE - PRIVADA |
| BRA2160 | BRA - stratum 60 : RIO GRANDE DO SUL - FEDERAL/ESTADUAL |
| BRA2161 | BRA - stratum 61 : RIO GRANDE DO SUL - MUNICIPAL |
| BRA2162 | BRA - stratum 62 : RIO GRANDE DO SUL - PRIVADA |
| BRA2263 | BRA - stratum 63 : RONDÔNIA - FEDERAL/ESTADUAL |
| BRA2264 | BRA - stratum 64 : RONDÔNIA - MUNICIPAL |
| BRA2265 | BRA - stratum 65 : RONDÔNIA - PRIVADA |
| BRA2366 | BRA - stratum 66 : RORAIMA - FEDERAL/ESTADUAL |
| BRA2367 | BRA - stratum 67 : RORAIMA - MUNICIPAL |
| BRA2368 | BRA - stratum 68 : RORAIMA - PRIVADA |
| BRA2469 | BRA - stratum 69 : SANTA CATARINA - FEDERAL/ESTADUAL |
| BRA2470 | BRA - stratum 70 : SANTA CATARINA - MUNICIPAL |
| BRA2471 | BRA - stratum 71 : SANTA CATARINA - PRIVADA |
| BRA2572 | BRA - stratum 72 : SÃO PAULO - FEDERAL/ESTADUAL |
| BRA2573 | BRA - stratum 73 : SÃO PAULO - MUNICIPAL |
| BRA2574 | BRA - stratum 74 : SÃO PAULO - PRIVADA |
| BRA2675 | BRA - stratum 75 : SERGIPE - FEDERAL/ESTADUAL |
| BRA2676 | BRA - stratum 76 : SERGIPE - MUNICIPAL |
| BRA2677 | BRA - stratum 77 : SERGIPE - PRIVADA |
| BRA2778 | BRA - stratum 78 : TOCANTINS - FEDERAL/ESTADUAL |
| BRA2779 | BRA - stratum 79 : TOCANTINS - MUNICIPAL |
| BRA2780 | BRA - stratum 80 : TOCANTINS - PRIVADA |
| BRA9797 | Undisclosed STRATUM - Brazil |
| CAN0101 | CAN - stratum 01 : prov 10 Fr.& Eng. 0 to 17 |
| CAN0102 | CAN - stratum 02 : prov 10 Fr.& Eng. 18 to 34 |
| CAN0103 | CAN - stratum 03 : prov 10 Fr.& Eng. 35 to 196 |
| CAN0104 | CAN - stratum 04 : prov 10 Fr.& Eng. 197 to ... |
| CAN0210 | CAN - stratum 10 : prov 11 Fr.& Eng. 0 to ... |
| CAN0320 | CAN - stratum 20 : prov 12 Eng. 0 to 17 |
| CAN0321 | CAN - stratum 21 : prov 12 Eng. 18 to 34 |
| CAN0322 | CAN - stratum 22 : prov 12 Eng. 35 to ... |
| CAN0325 | CAN - stratum 25 : prov 12 Fr. 0 to 17 |
| CAN0326 | CAN - stratum 26 : prov 12 Fr. 18 to ... |
| CAN0430 | CAN - stratum 30 : prov 13 Eng. 0 to 34 |
| CAN0431 | CAN - stratum 31 : prov 13 Eng. 35 to ... |
| CAN0435 | CAN - stratum 35 : prov 13 Fr. 0 to 34 |
| CAN0436 | CAN - stratum 36 : prov 13 Fr. 35 to 117 |
| CAN0437 | CAN - stratum 37 : prov 13 Fr. 118 to ... |
| CAN0540 | CAN - stratum 40 : prov 24 Eng. 0 to 17 |
| CAN0541 | CAN - stratum 41 : prov 24 Eng. 18 to 34 |
| CAN0542 | CAN - stratum 42 : prov 24 Eng. 35 to 305 |
| CAN0543 | CAN - stratum 43 : prov 24 Eng. 306 to ... |
| CAN0545 | CAN - stratum 45 : prov 24 Fr. 0 to 17 |
| CAN0546 | CAN - stratum 46 : prov 24 Fr. 18 to 34 |
| CAN0547 | CAN - stratum 47 : prov 24 Fr. 35 to ... |
| CAN0650 | CAN - stratum 50 : prov 35 Eng. 0 to 2 |
| CAN0651 | CAN - stratum 51 : prov 35 Eng. 3 to 34 |
| CAN0652 | CAN - stratum 52 : prov 35 Eng. 35 to ... |
| CAN0655 | CAN - stratum 55 : prov 35 Fr. 0 to 2 |
| CAN0656 | CAN - stratum 56 : prov 35 Fr. 3 to 34 |
| CAN0657 | CAN - stratum 57 : prov 35 Fr. 35 to ... |
| CAN0760 | CAN - stratum 60 : prov 46 Eng. 0 to 17 |
| CAN0761 | CAN - stratum 61 : prov 46 Eng. 18 to 34 |
| CAN0762 | CAN - stratum 62 : prov 46 Eng. 35 to ... |
| CAN0765 | CAN - stratum 65 : prov 46 Fr. 0 to 17 |
| CAN0766 | CAN - stratum 66 : prov 46 Fr. 18 to ... |
| CAN0870 | CAN - stratum 70 : prov 47 Eng. 0 to 17 |
| CAN0871 | CAN - stratum 71 : prov 47 Eng. 18 to 34 |
| CAN0872 | CAN - stratum 72 : prov 47 Eng. 35 to ... |
| CAN0875 | CAN - stratum 75 : prov 47 Fr. 0 to 8 |
| CAN0876 | CAN - stratum 76 : prov 47 Fr. 9 to ... |
| CAN0980 | CAN - stratum 80 : prov 48 Eng. 0 to 17 |
| CAN0981 | CAN - stratum 81 : prov 48 Eng. 18 to 34 |
| CAN0982 | CAN - stratum 82 : prov 48 Eng. 35 to ... |
| CAN0985 | CAN - stratum 85 : prov 48 Fr. 0 to 8 |
| CAN0986 | CAN - stratum 86 : prov 48 Fr. 9 to ... |
| CAN1090 | CAN - stratum 90 : prov 59 Eng. 0 to 17 |
| CAN1091 | CAN - stratum 91 : prov 59 Eng. 18 to 34 |
| CAN1092 | CAN - stratum 92 : prov 59 Eng. 35 to ... |
| CAN1095 | CAN - stratum 95 : prov 59 Fr. 0 to 8 |
| CAN1096 | CAN - stratum 96 : prov 59 Fr. 9 to ... |
| CAN9797 | Undisclosed STRATUM - Canada |
| CHE0008 | CHE - stratum 08 : 8-D-Rest.gr9.pub. |
| CHE0009 | CHE - stratum 09 : 9-D-CH.other.v1.pub |
| CHE0010 | CHE - stratum 10 : 10-D-CH.other.v2.pub |
| CHE0011 | CHE - stratum 11 : 11-D-CH.other.v3.pub. |
| CHE0012 | CHE - stratum 12 : 12-D-CH.other.b.pub. |
| CHE0013 | CHE - stratum 13 : 13-D-CH.gr9.priv. |
| CHE0021 | CHE - stratum 21 : 21-F-CH.other.v1.pub. |
| CHE0022 | CHE - stratum 22 : 22-F-CH.other.v2.pub. |
| CHE0023 | CHE - stratum 23 : 23-F-CH.other.v3.pub. |
| CHE0024 | CHE - stratum 24 : 24-F-CH.other.b.pub. |
| CHE0025 | CHE - stratum 25 : 25-F-CH.gr9.priv. |
| CHE0027 | CHE - stratum 27 : 27-I-CH.other.v.pub. |
| CHE0028 | CHE - stratum 28 : 28-I-CH.other.b.pub. |
| CHE0029 | CHE - stratum 29 : 29-I-CH.gr9.priv. |
| CHE0101 | CHE - stratum 01 : 1-AG.gr9.pub |
| CHE0303 | CHE - stratum 03 : 3-BE(d).gr9.pub |
| CHE0404 | CHE - stratum 04 : 4-SG.gr9.pub |
| CHE0661 | CHE - stratum 61 : 61-ZH.gr9.pub.gym |
| CHE0662 | CHE - stratum 62 : 62-ZH.gr9.pub.rest |
| CHE0706 | CHE - stratum 06 : 6-VS(d).gr9.pub |
| CHE0814 | CHE - stratum 14 : 14-BE(f).gr9.pub. |
| CHE0915 | CHE - stratum 15 : 15-FR(f).gr9.pub. |
| CHE1016 | CHE - stratum 16 : 16-GE.gr9.pub. |
| CHE1117 | CHE - stratum 17 : 17-JU.gr9.pub. |
| CHE1218 | CHE - stratum 18 : 18-NE.gr9.pub. |
| CHE1319 | CHE - stratum 19 : 19-VD.gr9.pub. |
| CHE1420 | CHE - stratum 20 : 20-VS(f).gr9.pub. |
| CHE1526 | CHE - stratum 26 : 26-I-CH.gr9.pub. |
| CHE1602 | CHE - stratum 02 : 2-SO.gr9.pub |
| CHE9797 | Undisclosed STRATUM - Switzerland |
| CHL0101 | CHL - stratum 01 : Municipal / Primary / Only Primary |
| CHL0102 | CHL - stratum 02 : Municipal / Primary andSecondary / HS |
| CHL0103 | CHL - stratum 03 : Municipal / Primary andSecondary / TP |
| CHL0104 | CHL - stratum 04 : Municipal / Primary andSecondary / HS-TP |
| CHL0105 | CHL - stratum 05 : Municipal / Secondary / HS |
| CHL0106 | CHL - stratum 06 : Municipal / Secondary / TP |
| CHL0107 | CHL - stratum 07 : Municipal / Secondary / HS-TP |
| CHL0208 | CHL - stratum 08 : Subsidized / Primary / Only Primary |
| CHL0209 | CHL - stratum 09 : Subsidized / Primary andSecondary / HS |
| CHL0210 | CHL - stratum 10 : Subsidized / Primary andSecondary / TP |
| CHL0211 | CHL - stratum 11 : Subsidized / Primary andSecondary / HS-TP |
| CHL0212 | CHL - stratum 12 : Subsidized / Secondary / HS |
| CHL0213 | CHL - stratum 13 : Subsidized / Secondary / TP |
| CHL0214 | CHL - stratum 14 : Subsidized / Secondary / HS-TP |
| CHL0315 | CHL - stratum 15 : Private / Primary / Only Primary |
| CHL0316 | CHL - stratum 16 : Private / Primary andSecondary / HS |
| CHL0317 | CHL - stratum 17 : Private / Secondary / HS |
| CHL0318 | CHL - stratum 18 : Private / Secondary / TP |
| CHL9797 | Undisclosed STRATUM - Chile |
| COL0101 | COL - stratum 01 : BOGOTÁ |
| COL0205 | COL - stratum 05 : CALI |
| COL0303 | COL - stratum 03 : MANIZALES-ESCUELA ACTIVA |
| COL0404 | COL - stratum 04 : MEDELLÍN |
| COL0502 | COL - stratum 02 : REST OF MANIZALES |
| COL0606 | COL - stratum 06 : REST OF THE COUNTRY |
| 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/Large |
| CZE0102 | CZE - stratum 02 : Basic/Region1/MSS |
| CZE0103 | CZE - stratum 03 : Basic/Region1/VSS |
| CZE0204 | CZE - stratum 04 : Basic/Region2/Large |
| CZE0205 | CZE - stratum 05 : Basic/Region2/MSS |
| CZE0206 | CZE - stratum 06 : Basic/Region2/VSS |
| CZE0307 | CZE - stratum 07 : Basic/Region3/Large |
| CZE0308 | CZE - stratum 08 : Basic/Region3/MSS |
| CZE0309 | CZE - stratum 09 : Basic/Region3/VSS |
| CZE0411 | CZE - stratum 11 : Basic/Region4/MSS |
| CZE0412 | CZE - stratum 12 : Basic/Region4/VSS |
| CZE0513 | CZE - stratum 13 : Basic/Region5/Large |
| CZE0514 | CZE - stratum 14 : Basic/Region5/MSS |
| CZE0515 | CZE - stratum 15 : Basic/Region5/VSS |
| CZE0616 | CZE - stratum 16 : Basic/Region6/Large |
| CZE0617 | CZE - stratum 17 : Basic/Region6/MSS |
| CZE0618 | CZE - stratum 18 : Basic/Region6/VSS |
| CZE0719 | CZE - stratum 19 : Basic/Region7/Large |
| CZE0720 | CZE - stratum 20 : Basic/Region7/MSS |
| CZE0721 | CZE - stratum 21 : Basic/Region7/VSS |
| CZE0822 | CZE - stratum 22 : Basic/Region8/Large |
| CZE0823 | CZE - stratum 23 : Basic/Region8/MSS |
| CZE0824 | CZE - stratum 24 : Basic/Region8/VSS |
| CZE0925 | CZE - stratum 25 : Basic/Region9/Large |
| CZE0926 | CZE - stratum 26 : Basic/Region9/MSS |
| CZE0927 | CZE - stratum 27 : Basic/Region9/VSS |
| CZE1028 | CZE - stratum 28 : Basic/Region10/Large |
| CZE1029 | CZE - stratum 29 : Basic/Region10/MSS |
| CZE1030 | CZE - stratum 30 : Basic/Region10/VSS |
| CZE1131 | CZE - stratum 31 : Basic/Region11/Large |
| CZE1132 | CZE - stratum 32 : Basic/Region11/MSS |
| CZE1133 | CZE - stratum 33 : Basic/Region11/VSS |
| CZE1234 | CZE - stratum 34 : Basic/Region12/Large |
| CZE1235 | CZE - stratum 35 : Basic/Region12/MSS |
| CZE1236 | CZE - stratum 36 : Basic/Region12/VSS |
| CZE1337 | CZE - stratum 37 : Basic/Region13/Large |
| CZE1338 | CZE - stratum 38 : Basic/Region13/MSS |
| CZE1339 | CZE - stratum 39 : Basic/Region13/VSS |
| CZE1440 | CZE - stratum 40 : Basic/Region14/Large |
| CZE1441 | CZE - stratum 41 : Basic/Region14/MSS |
| CZE1442 | CZE - stratum 42 : Basic/Region14/VSS |
| CZE1543 | CZE - stratum 43 : 6-8yrGym/Region1/Large |
| CZE1544 | CZE - stratum 44 : 6-8yrGym/Region1/MSS andVSS |
| CZE1645 | CZE - stratum 45 : 6-8yrGym/Region2/Large |
| CZE1646 | CZE - stratum 46 : 6-8yrGym/Region2/MSS andVSS |
| CZE1747 | CZE - stratum 47 : 6-8yrGym/Region3/Large |
| CZE1748 | CZE - stratum 48 : 6-8yrGym/Region3/MSS andVSS |
| CZE1849 | CZE - stratum 49 : 6-8yrGym/Region4/Large |
| CZE1850 | CZE - stratum 50 : 6-8yrGym/Region4/MSS andVSS |
| CZE1951 | CZE - stratum 51 : 6-8yrGym/Region5/Large |
| CZE1952 | CZE - stratum 52 : 6-8yrGym/Region5/MSS andVSS |
| CZE2053 | CZE - stratum 53 : 6-8yrGym/Region6/Large |
| CZE2054 | CZE - stratum 54 : 6-8yrGym/Region6/MSS andVSS |
| CZE2155 | CZE - stratum 55 : 6-8yrGym/Region7/Large |
| CZE2156 | CZE - stratum 56 : 6-8yrGym/Region7/MSS andVSS |
| CZE2257 | CZE - stratum 57 : 6-8yrGym/Region8/Large |
| CZE2258 | CZE - stratum 58 : 6-8yrGym/Region8/MSS andVSS |
| CZE2359 | CZE - stratum 59 : 6-8yrGym/Region9/Large |
| CZE2360 | CZE - stratum 60 : 6-8yrGym/Region9/MSS andVSS |
| CZE2461 | CZE - stratum 61 : 6-8yrGym/Region10/Large |
| CZE2462 | CZE - stratum 62 : 6-8yrGym/Region10/MSS andVSS |
| CZE2563 | CZE - stratum 63 : 6-8yrGym/Region11/Large |
| CZE2564 | CZE - stratum 64 : 6-8yrGym/Region11/MSS andVSS |
| CZE2665 | CZE - stratum 65 : 6-8yrGym/Region12/Large |
| CZE2666 | CZE - stratum 66 : 6-8yrGym/Region12/MSS andVSS |
| CZE2767 | CZE - stratum 67 : 6-8yrGym/Region13/Large |
| CZE2768 | CZE - stratum 68 : 6-8yrGym/Region13/MSS andVSS |
| CZE2869 | CZE - stratum 69 : 6-8yrGym/Region14/Large |
| CZE2870 | CZE - stratum 70 : 6-8yrGym/Region14/MSS andVSS |
| CZE2971 | CZE - stratum 71 : 4yr Gym/Large |
| CZE2972 | CZE - stratum 72 : 4yr Gym/MSS |
| CZE2973 | CZE - stratum 73 : 4yr Gym/VSS |
| CZE3074 | CZE - stratum 74 : Voc-Conservatory with maturate/Large |
| CZE3075 | CZE - stratum 75 : Voc-Conservatory with maturate/MSS |
| CZE3076 | CZE - stratum 76 : Voc-Conservatory with maturate/VSS |
| CZE3177 | CZE - stratum 77 : Voc-Conservatory without maturate/Large |
| CZE3178 | CZE - stratum 78 : Voc-Conservatory without maturate/MSS |
| CZE3179 | CZE - stratum 79 : Voc-Conservatory without maturate/VSS |
| CZE3280 | CZE - stratum 80 : Special/practical/Large |
| CZE3281 | CZE - stratum 81 : Special/practical/MSS |
| CZE3282 | CZE - stratum 82 : Special/practical/VSS |
| CZE9797 | Undisclosed STRATUM - Czech Republic |
| 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 |
| DNK0005 | DNK - stratum 05 : 5=Faroe Island |
| DNK9797 | Undisclosed STRATUM - Denmark |
| 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 : BalearicIslands, public, NA |
| ESP0408 | ESP - stratum 08 : BalearicIslands, private, NA |
| ESP0509 | ESP - stratum 09 : CanaryIslands, public, NA |
| ESP0510 | ESP - stratum 10 : CanaryIslands, private, NA |
| ESP0611 | ESP - stratum 11 : Cantabria, public, NA |
| ESP0612 | ESP - stratum 12 : Cantabria, private, NA |
| ESP0713 | ESP - stratum 13 : CastileandLeon, public, NA |
| ESP0714 | ESP - stratum 14 : CastileandLeon, private, NA |
| ESP0815 | ESP - stratum 15 : Castile-LaMancha,public,NA |
| ESP0816 | ESP - stratum 16 : Castile-LaMancha,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 : LaRioja, public, NA |
| ESP1224 | ESP - stratum 24 : LaRioja, 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 : BasqueCountry, public, A |
| ESP1632 | ESP - stratum 32 : BasqueCountry, public, B |
| ESP1633 | ESP - stratum 33 : BasqueCountry, public, D |
| ESP1634 | ESP - stratum 34 : BasqueCountry, private, A |
| ESP1635 | ESP - stratum 35 : BasqueCountry, private, B |
| ESP1636 | ESP - stratum 36 : BasqueCountry, private, D |
| ESP1737 | ESP - stratum 37 : Valencia, public, NA |
| ESP1738 | ESP - stratum 38 : Valencia, private, NA |
| ESP1839 | ESP - stratum 39 : CeutaandMelilla, public, NA |
| ESP1840 | ESP - stratum 40 : CeutaandMelilla, private, NA |
| ESP9797 | Undisclosed STRATUM - Spain |
| EST0001 | EST - stratum 01 : Est |
| EST0002 | EST - stratum 02 : Rus |
| EST0003 | EST - stratum 03 : Mix |
| EST9797 | Undisclosed STRATUM - Estonia |
| FIN0001 | FIN - stratum 01 : South-Urban-High |
| FIN0002 | FIN - stratum 02 : South-Urban-Low/Not 0 |
| FIN0003 | FIN - stratum 03 : South-Urban-Low/Zero |
| FIN0004 | FIN - stratum 04 : South-Rural-Low |
| FIN0005 | FIN - stratum 05 : West-Urban-High |
| FIN0006 | FIN - stratum 06 : West-Urban-Low |
| FIN0007 | FIN - stratum 07 : West-Rural-Low |
| FIN0008 | FIN - stratum 08 : East-Urban-High |
| FIN0009 | FIN - stratum 09 : East-Urban-Low |
| FIN0010 | FIN - stratum 10 : East-Rural-Low |
| FIN0011 | FIN - stratum 11 : North-Urban-High |
| FIN0012 | FIN - stratum 12 : North-Urban-Low |
| FIN0013 | FIN - stratum 13 : North-Rural-Low |
| FIN0014 | FIN - stratum 14 : Swedish/Aland-Urban-Low |
| FIN0015 | FIN - stratum 15 : Swedish/Aland-Rural-Low |
| FIN0016 | FIN - stratum 16 : Swedish/Not Aland-Urban-Low |
| FIN0017 | FIN - stratum 17 : Swedish/Not Aland-Rural-Low |
| FIN9797 | Undisclosed STRATUM - Finland |
| FRA0001 | FRA - stratum 01 : Lyc GT LS |
| FRA0002 | FRA - stratum 02 : Coll LS |
| FRA0003 | FRA - stratum 03 : Lyc PRO LS |
| FRA0004 | FRA - stratum 04 : Lyc Agr LS |
| FRA0005 | FRA - stratum 05 : MSS |
| FRA0006 | FRA - stratum 06 : VSS |
| FRA9797 | Undisclosed STRATUM - France |
| GBR1101 | QUK - stratum 01 : England, Maintained selective, North |
| GBR1102 | QUK - stratum 02 : England, Maintained selective, Midlands |
| GBR1103 | QUK - stratum 03 : England, Maintained selective, South |
| GBR1104 | QUK - stratum 04 : England, Maintained selective, Greater Lo |
| GBR1105 | QUK - stratum 05 : England, Maintained non-selective, North |
| GBR1106 | QUK - stratum 06 : England, Maintained non-selective, Midlan |
| GBR1107 | QUK - stratum 07 : England, Maintained non-selective, South |
| GBR1108 | QUK - stratum 08 : England, Maintained non-selective, Greate |
| GBR1109 | QUK - stratum 09 : England, Independent, North |
| GBR1110 | QUK - stratum 10 : England, Independent, Midlands |
| GBR1111 | QUK - stratum 11 : England, Independent, South |
| GBR1112 | QUK - stratum 12 : England, Independent, Greater London |
| GBR1219 | QUK - stratum 19 : Northern Ireland, Maintained selective, B |
| GBR1220 | QUK - stratum 20 : Northern Ireland, Maintained selective, W |
| GBR1221 | QUK - stratum 21 : Northern Ireland, Maintained selective, N |
| GBR1222 | QUK - stratum 22 : Northern Ireland, Maintained selective, S |
| GBR1223 | QUK - stratum 23 : Northern Ireland, Maintained selective, S |
| GBR1224 | QUK - stratum 24 : Northern Ireland, Maintained non-selectiv |
| GBR1225 | QUK - stratum 25 : Northern Ireland, Maintained non-selectiv |
| GBR1226 | QUK - stratum 26 : Northern Ireland, Maintained non-selectiv |
| GBR1227 | QUK - stratum 27 : Northern Ireland, Maintained non-selectiv |
| GBR1228 | QUK - stratum 28 : Northern Ireland, Maintained non-selectiv |
| GBR1229 | QUK - stratum 29 : Northern Ireland, Independent |
| GBR1313 | QUK - stratum 13 : Wales, Maintained, North |
| GBR1314 | QUK - stratum 14 : Wales, Maintained, Powys and South West |
| GBR1315 | QUK - stratum 15 : Wales, Maintained, South East |
| GBR1316 | QUK - stratum 16 : Wales, Independent, North |
| GBR1317 | QUK - stratum 17 : Wales, Independent, Powys and South West |
| GBR1318 | QUK - stratum 18 : Wales, Independent, South East |
| GBR2001 | QSC - stratum 01 : Scotland 1-public/lowest band |
| GBR2002 | QSC - stratum 02 : Scotland 2-public/second lowest band |
| GBR2003 | QSC - stratum 03 : Scotland 3-public/middle band |
| GBR2004 | QSC - stratum 04 : Scotland 4-public/second highest band |
| GBR2005 | QSC - stratum 05 : Scotland 5-public/highest band |
| GBR2006 | QSC - stratum 06 : Scotland 6-public/missing |
| GBR2007 | QSC - stratum 07 : Scotland 7-independent/lowest band |
| GBR2008 | QSC - stratum 08 : Scotland 8-independent/second lowest band |
| GBR2009 | QSC - stratum 09 : Scotland 9-independent/middle band |
| GBR2010 | QSC - stratum 10 : Scotland 10-independent/second highest ba |
| GBR2011 | QSC - stratum 11 : Scotland 11-independent/highest band |
| GBR2012 | QSC - stratum 12 : Scotland 12-independent/missing |
| GBR9797 | Undisclosed STRATUM - United Kingdom |
| GRC0001 | GRC - stratum 01 : Attica public |
| GRC0002 | GRC - stratum 02 : Central Greece public |
| GRC0003 | GRC - stratum 03 : Central Macedonia public |
| GRC0004 | GRC - stratum 04 : Crete public |
| GRC0005 | GRC - stratum 05 : East Macedonia public |
| GRC0006 | GRC - stratum 06 : Thrace public |
| GRC0007 | GRC - stratum 07 : Epirus public |
| GRC0008 | GRC - stratum 08 : Ionian islands public |
| GRC0009 | GRC - stratum 09 : North Aegean public |
| GRC0010 | GRC - stratum 10 : Peloponnese public |
| GRC0011 | GRC - stratum 11 : South Aegean public |
| GRC0012 | GRC - stratum 12 : Thessaly public |
| GRC0013 | GRC - stratum 13 : West Greece public |
| GRC0014 | GRC - stratum 14 : West Macedonia public |
| GRC0015 | GRC - stratum 15 : Attica private |
| GRC0016 | GRC - stratum 16 : Rest of Greece private |
| GRC9797 | Undisclosed STRATUM - Greece |
| HKG0001 | HKG - stratum 01 : Government |
| HKG0002 | HKG - stratum 02 : Aided or Caput |
| HKG0003 | HKG - stratum 03 : Private or International |
| HKG0004 | HKG - stratum 04 : Direct Subsidy Scheme |
| HKG9797 | Undisclosed STRATUM - Hong Kong-China |
| 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 educatio |
| HRV9797 | Undisclosed STRATUM - Croatia |
| HUN0001 | HUN - stratum 01 : (1) Prim |
| HUN0002 | HUN - stratum 02 : (2) Gram 1 |
| HUN0003 | HUN - stratum 03 : (3) Gram 2 |
| HUN0004 | HUN - stratum 04 : (4) Gram 3 |
| HUN0005 | HUN - stratum 05 : (5) Voc Sec |
| HUN0006 | HUN - stratum 06 : (6) Voc |
| HUN9797 | Undisclosed STRATUM - Hungary |
| IDN0001 | IDN - stratum 01 : Indonesia |
| IDN9797 | Undisclosed STRATUM - Indonesia |
| IRL0001 | IRL - stratum 01 : Size <=40 / Community/Comprehensive |
| IRL0002 | IRL - stratum 02 : Size 41-80 / Community/Comprehensive |
| IRL0003 | IRL - stratum 03 : Size > 80 / Community/Comprehensive |
| IRL0004 | IRL - stratum 04 : Size <=40 / Secondary |
| IRL0005 | IRL - stratum 05 : Size 41-80 / Secondary |
| IRL0006 | IRL - stratum 06 : Size > 80 / Secondary |
| IRL0007 | IRL - stratum 07 : Size <=40 / Vocational |
| IRL0008 | IRL - stratum 08 : Size 41-80 / Vocational |
| IRL0009 | IRL - stratum 09 : Size > 80 / Vocational |
| IRL0010 | IRL - stratum 10 : Non-Aided |
| IRL0011 | IRL - stratum 11 : Project Maths |
| 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 / 1-8 |
| ISL0006 | ISL - stratum 06 : Nágrenni Reykjavíkur / 9-16 |
| ISL0007 | ISL - stratum 07 : Nágrenni Reykjavíkur / 17-35 |
| ISL0008 | ISL - stratum 08 : Nágrenni Reykjavíkur / > 35 |
| ISL0009 | ISL - stratum 09 : Suðurnes / 1-8 |
| ISL0011 | ISL - stratum 11 : Suðurnes / 17-35 |
| ISL0012 | ISL - stratum 12 : Suðurnes / >35 |
| ISL0013 | ISL - stratum 13 : Vesturland / 1-8 |
| ISL0014 | ISL - stratum 14 : Vesturland / 9-16 |
| ISL0015 | ISL - stratum 15 : Vesturland / 17-35 |
| ISL0016 | ISL - stratum 16 : Vesturland / >35 |
| ISL0017 | ISL - stratum 17 : Vestfirðir / 1-8 |
| ISL0018 | ISL - stratum 18 : Vestfirðir / 9-16 |
| ISL0020 | ISL - stratum 20 : Vestfirðir / > 35 |
| ISL0021 | ISL - stratum 21 : Norðurland vestra / 1-8 |
| ISL0022 | ISL - stratum 22 : Norðurland vestra / 9-16 |
| ISL0023 | ISL - stratum 23 : Norðurland vestra /17-35 |
| ISL0024 | ISL - stratum 24 : Norðurland vestra / >35 |
| ISL0025 | ISL - stratum 25 : Norðurland eystra / 1-8 |
| ISL0027 | ISL - stratum 27 : Norðurland eystra / 17-35 |
| ISL0028 | ISL - stratum 28 : Norðurland eystra / > 35 |
| ISL0029 | ISL - stratum 29 : Austurland / 1-8 |
| ISL0030 | ISL - stratum 30 : Austurland / 9-16 |
| ISL0031 | ISL - stratum 31 : Austurland / 17-35 |
| ISL0033 | ISL - stratum 33 : Suðurland / 1-8 |
| ISL0034 | ISL - stratum 34 : Suðurland / 9-16 |
| ISL0035 | ISL - stratum 35 : Suðurland /17-35 |
| ISL0036 | ISL - stratum 36 : Suðurland / > 35 |
| ISL9797 | Undisclosed STRATUM - Iceland |
| ISR0001 | ISR - stratum 01 |
| ISR0002 | ISR - stratum 02 |
| ISR0003 | ISR - stratum 03 |
| ISR0004 | ISR - stratum 04 |
| ISR0005 | ISR - stratum 05 |
| ISR0006 | ISR - stratum 06 |
| ISR0007 | ISR - stratum 07 |
| ISR0008 | ISR - stratum 08 |
| ISR0009 | ISR - stratum 09 |
| ISR0010 | ISR - stratum 10 |
| ISR0011 | ISR - stratum 11 |
| ISR0012 | ISR - stratum 12 |
| ISR9797 | Undisclosed STRATUM - Israel |
| ITA0101 | ITA - REGION 01 stratum 01 : [Region 01] Bolzano Licei |
| ITA0102 | ITA - REGION 01 stratum 02 : [Region 01] Bolzano Tecnici |
| ITA0103 | ITA - REGION 01 stratum 03 : [Region 01] Bolzano Professiona |
| ITA0104 | ITA - REGION 01 stratum 04 : [Region 01] Bolzano Medie |
| ITA0105 | ITA - REGION 01 stratum 05 : [Region 01] Bolzano Formazione |
| ITA0201 | ITA - REGION 02 stratum 01 : [Region 02] Basilicata Licei |
| ITA0202 | ITA - REGION 02 stratum 02 : [Region 02] Basilicata Tecnici |
| ITA0203 | ITA - REGION 02 stratum 03 : [Region 02] Basilicata Professi |
| ITA0204 | ITA - REGION 02 stratum 04 : [Region 02] Basilicata Medie |
| ITA0301 | ITA - REGION 03 stratum 01 : [Region 03] Campania Licei |
| ITA0302 | ITA - REGION 03 stratum 02 : [Region 03] Campania Tecnici |
| ITA0303 | ITA - REGION 03 stratum 03 : [Region 03] Campania Profession |
| ITA0304 | ITA - REGION 03 stratum 04 : [Region 03] Campania Medie |
| ITA0401 | ITA - REGION 04 stratum 01 : [Region 04] Emilia Romagna Lice |
| ITA0402 | ITA - REGION 04 stratum 02 : [Region 04] Emilia Romagna Tecn |
| ITA0403 | ITA - REGION 04 stratum 03 : [Region 04] Emilia Romagna Prof |
| ITA0404 | ITA - REGION 04 stratum 04 : [Region 04] Emilia Romagna Medi |
| ITA0405 | ITA - REGION 04 stratum 05 : [Region 04] Emilia Romagna Form |
| ITA0501 | ITA - REGION 05 stratum 01 : [Region 05] Friuli Venezia Giul |
| ITA0502 | ITA - REGION 05 stratum 02 : [Region 05] Friuli Venezia Giul |
| ITA0503 | ITA - REGION 05 stratum 03 : [Region 05] Friuli Venezia Giul |
| ITA0504 | ITA - REGION 05 stratum 04 : [Region 05] Friuli Venezia Giul |
| ITA0505 | ITA - REGION 05 stratum 05 : [Region 05] Friuli Venezia Giul |
| ITA0601 | ITA - REGION 06 stratum 01 : [Region 06] Liguria Licei |
| ITA0602 | ITA - REGION 06 stratum 02 : [Region 06] Liguria Tecnici |
| ITA0603 | ITA - REGION 06 stratum 03 : [Region 06] Liguria Professiona |
| ITA0604 | ITA - REGION 06 stratum 04 : [Region 06] Liguria Medie |
| ITA0605 | ITA - REGION 06 stratum 05 : [Region 06] Liguria Formazione |
| ITA0701 | ITA - REGION 07 stratum 01 : [Region 07] Lombardia Licei |
| ITA0702 | ITA - REGION 07 stratum 02 : [Region 07] Lombardia Tecnici |
| ITA0703 | ITA - REGION 07 stratum 03 : [Region 07] Lombardia Professio |
| ITA0704 | ITA - REGION 07 stratum 04 : [Region 07] Lombardia Medie |
| ITA0705 | ITA - REGION 07 stratum 05 : [Region 07] Lombardia Formazion |
| ITA0801 | ITA - REGION 08 stratum 01 : [Region 08] Piemonte Licei |
| ITA0802 | ITA - REGION 08 stratum 02 : [Region 08] Piemonte Tecnici |
| ITA0803 | ITA - REGION 08 stratum 03 : [Region 08] Piemonte Profession |
| ITA0804 | ITA - REGION 08 stratum 04 : [Region 08] Piemonte Medie |
| ITA0805 | ITA - REGION 08 stratum 05 : [Region 08] Piemonte Formazione |
| ITA0901 | ITA - REGION 09 stratum 01 : [Region 09] Puglia Licei |
| ITA0902 | ITA - REGION 09 stratum 02 : [Region 09] Puglia Tecnici |
| ITA0903 | ITA - REGION 09 stratum 03 : [Region 09] Puglia Professional |
| ITA0904 | ITA - REGION 09 stratum 04 : [Region 09] Puglia Medie |
| ITA0905 | ITA - REGION 09 stratum 05 : [Region 09] Puglia Formazione P |
| ITA1001 | ITA - REGION 10 stratum 01 : [Region 10] Sardegna Licei |
| ITA1002 | ITA - REGION 10 stratum 02 : [Region 10] Sardegna Tecnici |
| ITA1003 | ITA - REGION 10 stratum 03 : [Region 10] Sardegna Profession |
| ITA1004 | ITA - REGION 10 stratum 04 : [Region 10] Sardegna Medie |
| ITA1101 | ITA - REGION 11 stratum 01 : [Region 11] Sicilia Licei |
| ITA1102 | ITA - REGION 11 stratum 02 : [Region 11] Sicilia Tecnici |
| ITA1103 | ITA - REGION 11 stratum 03 : [Region 11] Sicilia Professiona |
| ITA1104 | ITA - REGION 11 stratum 04 : [Region 11] Sicilia Medie |
| ITA1201 | ITA - REGION 12 stratum 01 : [Region 12] Trento Licei |
| ITA1202 | ITA - REGION 12 stratum 02 : [Region 12] Trento Tecnici |
| ITA1203 | ITA - REGION 12 stratum 03 : [Region 12] Trento Professional |
| ITA1204 | ITA - REGION 12 stratum 04 : [Region 12] Trento Medie |
| ITA1205 | ITA - REGION 12 stratum 05 : [Region 12] Trento Formazione P |
| ITA1301 | ITA - REGION 13 stratum 01 : [Region 13] Veneto (Other) Lice |
| ITA1302 | ITA - REGION 13 stratum 02 : [Region 13] Veneto (Other) Tecn |
| ITA1303 | ITA - REGION 13 stratum 03 : [Region 13] Veneto (Other) Prof |
| ITA1304 | ITA - REGION 13 stratum 04 : [Region 13] Veneto (Other) Medi |
| ITA1305 | ITA - REGION 13 stratum 05 : [Region 13] Veneto (Other) Form |
| ITA1306 | ITA - REGION 13 stratum 06 : [Region 13] Veneto (Rovigo) Lic |
| ITA1307 | ITA - REGION 13 stratum 07 : [Region 13] Veneto (Rovigo) Tec |
| ITA1308 | ITA - REGION 13 stratum 08 : [Region 13] Veneto (Rovigo) Pro |
| ITA1309 | ITA - REGION 13 stratum 09 : [Region 13] Veneto (Rovigo) Med |
| ITA1310 | ITA - REGION 13 stratum 10 : [Region 13] Veneto (Rovigo) For |
| ITA1401 | ITA - REGION 14 stratum 01 : [Region 14] Abruzzo Licei |
| ITA1402 | ITA - REGION 14 stratum 02 : [Region 14] Abruzzo Tecnici |
| ITA1403 | ITA - REGION 14 stratum 03 : [Region 14] Abruzzo Professiona |
| ITA1404 | ITA - REGION 14 stratum 04 : [Region 14] Abruzzo Medie |
| ITA1405 | ITA - REGION 14 stratum 05 : [Region 14] Abruzzo Formazione |
| ITA1501 | ITA - REGION 15 stratum 01 : [Region 15] Calabria Licei |
| ITA1502 | ITA - REGION 15 stratum 02 : [Region 15] Calabria Tecnici |
| ITA1503 | ITA - REGION 15 stratum 03 : [Region 15] Calabria Profession |
| ITA1504 | ITA - REGION 15 stratum 04 : [Region 15] Calabria Medie |
| ITA1505 | ITA - REGION 15 stratum 05 : [Region 15] Calabria Formazione |
| ITA1601 | ITA - REGION 16 stratum 01 : [Region 16] Lazio Licei |
| ITA1602 | ITA - REGION 16 stratum 02 : [Region 16] Lazio Tecnici |
| ITA1603 | ITA - REGION 16 stratum 03 : [Region 16] Lazio Professionali |
| ITA1604 | ITA - REGION 16 stratum 04 : [Region 16] Lazio Medie |
| ITA1701 | ITA - REGION 17 stratum 01 : [Region 17] Marche Licei |
| ITA1702 | ITA - REGION 17 stratum 02 : [Region 17] Marche Tecnici |
| ITA1703 | ITA - REGION 17 stratum 03 : [Region 17] Marche Professional |
| ITA1704 | ITA - REGION 17 stratum 04 : [Region 17] Marche Medie |
| ITA1705 | ITA - REGION 17 stratum 05 : [Region 17] Marche Formazione P |
| ITA1801 | ITA - REGION 18 stratum 01 : [Region 18] Molise Licei |
| ITA1802 | ITA - REGION 18 stratum 02 : [Region 18] Molise Tecnici |
| ITA1803 | ITA - REGION 18 stratum 03 : [Region 18] Molise Professional |
| ITA1804 | ITA - REGION 18 stratum 04 : [Region 18] Molise Medie |
| ITA1901 | ITA - REGION 19 stratum 01 : [Region 19] Toscana Licei |
| ITA1902 | ITA - REGION 19 stratum 02 : [Region 19] Toscana Tecnici |
| ITA1903 | ITA - REGION 19 stratum 03 : [Region 19] Toscana Professiona |
| ITA1904 | ITA - REGION 19 stratum 04 : [Region 19] Toscana Medie |
| ITA1905 | ITA - REGION 19 stratum 05 : [Region 19] Toscana Formazione |
| ITA2001 | ITA - REGION 20 stratum 01 : [Region 20] Umbria Licei |
| ITA2002 | ITA - REGION 20 stratum 02 : [Region 20] Umbria Tecnici |
| ITA2003 | ITA - REGION 20 stratum 03 : [Region 20] Umbria Professional |
| ITA2004 | ITA - REGION 20 stratum 04 : [Region 20] Umbria Medie |
| ITA2005 | ITA - REGION 20 stratum 05 : [Region 20] Umbria Formazione P |
| ITA2101 | ITA - REGION 21 stratum 01 : [Region 21] Valle dAosta Licei |
| ITA2102 | ITA - REGION 21 stratum 02 : [Region 21] Valle dAosta Tecnic |
| ITA2103 | ITA - REGION 21 stratum 03 : [Region 21] Valle dAosta Profes |
| ITA2104 | ITA - REGION 21 stratum 04 : [Region 21] Valle dAosta 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_CIDA |
| JOR0005 | JOR - stratum 05 : Public_other |
| JOR0006 | JOR - stratum 06 : UNRWA |
| JOR0007 | JOR - stratum 07 : Private |
| JOR9797 | Undisclosed STRATUM - Jordan |
| JPN0101 | JPN - stratum 01 : 01: Public and Academic |
| JPN0202 | JPN - stratum 02 : 02: Public and Practical |
| JPN0203 | JPN - stratum 03 : 03: Private and Academic |
| JPN0204 | JPN - stratum 04 : 04: Private and Practical |
| JPN9797 | Undisclosed STRATUM - Japan |
| KAZ0001 | KAZ - stratum 01 : Akmolinskaya oblast, kazakh only |
| KAZ0002 | KAZ - stratum 02 : Akmolinskaya oblast, russian only |
| KAZ0003 | KAZ - stratum 03 : Akmolinskaya oblast, both |
| KAZ0004 | KAZ - stratum 04 : Aktubinskaya oblast, kazakh only |
| KAZ0005 | KAZ - stratum 05 : Aktubinskaya oblast, russian only |
| KAZ0006 | KAZ - stratum 06 : Aktubinskaya oblast, both |
| KAZ0007 | KAZ - stratum 07 : Almatinskaya oblast, kazakh only |
| KAZ0008 | KAZ - stratum 08 : Almatinskaya oblast, russian only |
| KAZ0009 | KAZ - stratum 09 : Almatinskaya oblast, both |
| KAZ0010 | KAZ - stratum 10 : Almatinskaya oblast, Kazakh and other or |
| KAZ0011 | KAZ - stratum 11 : Almatinskaya oblast, russian and uighur |
| KAZ0012 | KAZ - stratum 12 : Almatinskaya oblast, russian and kazakh a |
| KAZ0013 | KAZ - stratum 13 : Astana city, kazakh only |
| KAZ0014 | KAZ - stratum 14 : Astana city, russian |
| KAZ0015 | KAZ - stratum 15 : Astana city, both |
| KAZ0016 | KAZ - stratum 16 : Atyrauskaya oblast, kazakh only |
| KAZ0017 | KAZ - stratum 17 : Atyrauskaya oblast, russian only |
| KAZ0018 | KAZ - stratum 18 : Atyrauskaya oblast, both |
| KAZ0019 | KAZ - stratum 19 : East-Kazakhstan oblast, kazakh only |
| KAZ0020 | KAZ - stratum 20 : East-Kazakhstan oblast, russian only |
| KAZ0021 | KAZ - stratum 21 : East-Kazakhstan oblast, both |
| KAZ0022 | KAZ - stratum 22 : Almaty city, kazakh only |
| KAZ0023 | KAZ - stratum 23 : Almaty city, russian only |
| KAZ0024 | KAZ - stratum 24 : Almaty city, both |
| KAZ0025 | KAZ - stratum 25 : Almaty city, russian and uighur w/wo kaza |
| KAZ0026 | KAZ - stratum 26 : Zhambylskaya oblast, kazakh only |
| KAZ0027 | KAZ - stratum 27 : Zhambylskaya oblast, russian only |
| KAZ0028 | KAZ - stratum 28 : Zhambylskaya oblast, both |
| KAZ0029 | KAZ - stratum 29 : West-Kazakhstan oblast, kazakh only |
| KAZ0030 | KAZ - stratum 30 : West-Kazakhstan oblast, russian only |
| KAZ0031 | KAZ - stratum 31 : West-Kazakhstan oblast, both |
| KAZ0032 | KAZ - stratum 32 : Karagandinskaya oblast, kazakh only |
| KAZ0033 | KAZ - stratum 33 : Karagandinskaya oblast, russian only |
| KAZ0034 | KAZ - stratum 34 : Karagandinskaya oblast, both |
| KAZ0035 | KAZ - stratum 35 : Kostanayskaya oblast, kazakh only |
| KAZ0036 | KAZ - stratum 36 : Kostanayskaya oblast, russian only |
| KAZ0037 | KAZ - stratum 37 : Kostanayskaya oblast, both |
| KAZ0038 | KAZ - stratum 38 : Kyzyl-Ordinskaya oblast, kazakh only |
| KAZ0039 | KAZ - stratum 39 : Kyzyl-Ordinskaya oblast, russian only |
| KAZ0040 | KAZ - stratum 40 : Kyzyl-Ordinskaya oblast, both |
| KAZ0041 | KAZ - stratum 41 : Mangystauskaya oblast, kazakh only |
| KAZ0042 | KAZ - stratum 42 : Mangystauskaya oblast, russian only |
| KAZ0043 | KAZ - stratum 43 : Mangystauskaya oblast, both |
| KAZ0044 | KAZ - stratum 44 : Pavlodarskaya oblast, kazakh only |
| KAZ0045 | KAZ - stratum 45 : Pavlodarskaya oblast, russian only |
| KAZ0046 | KAZ - stratum 46 : Pavlodarskaya oblast, both |
| KAZ0047 | KAZ - stratum 47 : North-Kazakhstan oblast, kazakh only |
| KAZ0048 | KAZ - stratum 48 : North-Kazakhstan oblast, russian only |
| KAZ0049 | KAZ - stratum 49 : North-Kazakhstan oblast, both |
| KAZ0050 | KAZ - stratum 50 : South-Kazakhstan oblast, kazakh only |
| KAZ0051 | KAZ - stratum 51 : South-Kazakhstan oblast, russian only |
| KAZ0052 | KAZ - stratum 52 : South-Kazakhstan oblast, both |
| KAZ0053 | KAZ - stratum 53 : South-Kazakhstan oblast, kazakh and other |
| KAZ0054 | KAZ - stratum 54 : South-Kazakhstan oblast, kazakh and uzbek |
| KAZ0055 | KAZ - stratum 55 : South-Kazakhstan oblast, kazakh and uzbek |
| KAZ0056 | KAZ - stratum 56 : South-Kazakhstan oblast, russian and uzbe |
| KAZ0057 | KAZ - stratum 57 : South-Kazakhstan oblast, russian and kaza |
| KAZ0058 | KAZ - stratum 58 : South-Kazakhstan oblast, russian and kaza |
| KAZ9797 | Undisclosed STRATUM - Kazakhstan |
| KOR0101 | KOR - stratum 01 : Stratum 1: Lower secondary/General |
| KOR0202 | KOR - stratum 02 : Stratum 2: Upper secondary/General |
| KOR0302 | KOR - stratum 02 : Stratum 2: Upper secondary/General |
| KOR0403 | KOR - stratum 03 : Stratum 3: Upper secondary/Vocational |
| KOR9797 | Undisclosed STRATUM - Korea |
| LIE9797 | Undisclosed STRATUM - Liechtenstein |
| LIE9901 | LIE - stratum 01 : Liechtenstein |
| LTU0001 | LTU - stratum 01 : Capital-Basic |
| LTU0002 | LTU - stratum 02 : Capital-Secondary |
| LTU0003 | LTU - stratum 03 : Capital-Gymnasium |
| LTU0004 | LTU - stratum 04 : Capital-Other |
| LTU0005 | LTU - stratum 05 : City-Basic |
| LTU0006 | LTU - stratum 06 : City-Secondary |
| LTU0007 | LTU - stratum 07 : City-Gymnasium |
| LTU0008 | LTU - stratum 08 : City-Other |
| LTU0009 | LTU - stratum 09 : Town-Basic |
| LTU0010 | LTU - stratum 10 : Town-Secondary |
| LTU0011 | LTU - stratum 11 : Town-Gymnasium |
| LTU0012 | LTU - stratum 12 : Town-Other |
| LTU0013 | LTU - stratum 13 : Village-Basic |
| LTU0014 | LTU - stratum 14 : Village-Secondary |
| LTU0015 | LTU - stratum 15 : Village-Gymnasium |
| LTU0016 | LTU - stratum 16 : Village-Other |
| LTU9797 | Undisclosed STRATUM - Lithuania |
| LUX0001 | LUX - stratum 01 : ES government-public |
| LUX0002 | LUX - stratum 02 : EST government-public |
| LUX0003 | LUX - stratum 03 : ES+EST government-public |
| LUX0004 | LUX - stratum 04 : EST government-private |
| LUX0005 | LUX - stratum 05 : ES+EST government-private |
| LUX0006 | LUX - stratum 06 : 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 : Stratum 1: Public, Grammar-International |
| MAC0002 | MAC - stratum 02 : Stratum 2: Public, Technical-vocational, |
| MAC0003 | MAC - stratum 03 : Stratum 3: Private-in-Net, Grammar-Inter |
| MAC0004 | MAC - stratum 04 : Stratum 4: Private-in-Net, Grammar-Inter |
| MAC0005 | MAC - stratum 05 : Stratum 5: Private-in-Net, Grammar-Inter |
| MAC0006 | MAC - stratum 06 : Stratum 6: Private-in-Net, Technical-voc |
| MAC0007 | MAC - stratum 07 : Stratum 7: Private-not- in-Net, Grammar- |
| MAC0008 | MAC - stratum 08 : Stratum 8: Private-not-in-Net, Grammar-I |
| MAC0009 | MAC - stratum 09 : Stratum 9: Private-not-in-Net, Grammar-In |
| MAC0010 | MAC - stratum 10 : Stratum 10: Private-not- in-Net, Grammar- |
| MAC9797 | Undisclosed STRATUM - Macao-China |
| MEX0101 | MEX - REGION 01 stratum 01 : AGUASCALIENTES, large schools |
| MEX0102 | MEX - REGION 01 stratum 02 : AGUASCALIENTES, moderately smal |
| MEX0103 | MEX - REGION 01 stratum 03 : AGUASCALIENTES, very small scho |
| MEX0204 | MEX - REGION 02 stratum 04 : BAJA CALIFORNIA, large schools |
| MEX0205 | MEX - REGION 02 stratum 05 : BAJA CALIFORNIA, moderately sma |
| MEX0206 | MEX - REGION 02 stratum 06 : BAJA CALIFORNIA, very small sch |
| MEX0307 | MEX - REGION 03 stratum 07 : BAJA CALIFORNIA SUR, large scho |
| MEX0308 | MEX - REGION 03 stratum 08 : BAJA CALIFORNIA SUR, moderately |
| MEX0309 | MEX - REGION 03 stratum 09 : BAJA CALIFORNIA SUR, very small |
| MEX0410 | MEX - REGION 04 stratum 10 : CAMPECHE, large schools |
| MEX0411 | MEX - REGION 04 stratum 11 : CAMPECHE, moderately small scho |
| MEX0412 | MEX - REGION 04 stratum 12 : CAMPECHE, very small schools |
| MEX0513 | MEX - REGION 05 stratum 13 : COAHUILA, large schools |
| MEX0514 | MEX - REGION 05 stratum 14 : COAHUILA, moderately small scho |
| MEX0515 | MEX - REGION 05 stratum 15 : COAHUILA, very small schools |
| MEX0616 | MEX - REGION 06 stratum 16 : COLIMA, large schools |
| MEX0617 | MEX - REGION 06 stratum 17 : COLIMA, moderately small school |
| MEX0618 | MEX - REGION 06 stratum 18 : COLIMA, very small schools |
| MEX0719 | MEX - REGION 07 stratum 19 : CHIAPAS, large schools |
| MEX0720 | MEX - REGION 07 stratum 20 : CHIAPAS, moderately small schoo |
| MEX0721 | MEX - REGION 07 stratum 21 : CHIAPAS, very small schools |
| MEX0822 | MEX - REGION 08 stratum 22 : CHIHUAHUA, large schools |
| MEX0823 | MEX - REGION 08 stratum 23 : CHIHUAHUA, moderately small sch |
| MEX0824 | MEX - REGION 08 stratum 24 : CHIHUAHUA, very small schools |
| MEX0925 | MEX - REGION 09 stratum 25 : DISTRITO FEDERAL, large schools |
| MEX0926 | MEX - REGION 09 stratum 26 : DISTRITO FEDERAL, moderately sm |
| MEX0927 | MEX - REGION 09 stratum 27 : DISTRITO FEDERAL, very small sc |
| MEX1028 | MEX - REGION 10 stratum 28 : DURANGO, large schools |
| MEX1029 | MEX - REGION 10 stratum 29 : DURANGO, moderately small schoo |
| MEX1030 | MEX - REGION 10 stratum 30 : DURANGO, very small schools |
| MEX1131 | MEX - REGION 11 stratum 31 : GUANAJUATO, large schools |
| MEX1132 | MEX - REGION 11 stratum 32 : GUANAJUATO, moderately small sc |
| MEX1133 | MEX - REGION 11 stratum 33 : GUANAJUATO, very small schools |
| MEX1234 | MEX - REGION 12 stratum 34 : GUERRERO, large schools |
| MEX1235 | MEX - REGION 12 stratum 35 : GUERRERO, moderately small scho |
| MEX1236 | MEX - REGION 12 stratum 36 : GUERRERO, very small schools |
| MEX1337 | MEX - REGION 13 stratum 37 : HIDALGO, large schools |
| MEX1338 | MEX - REGION 13 stratum 38 : HIDALGO, moderately small schoo |
| MEX1339 | MEX - REGION 13 stratum 39 : HIDALGO, very small schools |
| MEX1440 | MEX - REGION 14 stratum 40 : JALISCO, large schools |
| MEX1441 | MEX - REGION 14 stratum 41 : JALISCO, moderately small schoo |
| MEX1442 | MEX - REGION 14 stratum 42 : JALISCO, very small schools |
| MEX1543 | MEX - REGION 15 stratum 43 : MEXICO, large schools |
| MEX1544 | MEX - REGION 15 stratum 44 : MEXICO, moderately small school |
| MEX1545 | MEX - REGION 15 stratum 45 : MEXICO, very small schools |
| MEX1749 | MEX - REGION 17 stratum 49 : MORELOS, large schools |
| MEX1750 | MEX - REGION 17 stratum 50 : MORELOS, moderately small schoo |
| MEX1751 | MEX - REGION 17 stratum 51 : MORELOS, very small schools |
| MEX1852 | MEX - REGION 18 stratum 52 : NAYARIT, large schools |
| MEX1853 | MEX - REGION 18 stratum 53 : NAYARIT, moderately small schoo |
| MEX1854 | MEX - REGION 18 stratum 54 : NAYARIT, very small schools |
| MEX1955 | MEX - REGION 19 stratum 55 : NUEVO LEON, large schools |
| MEX1956 | MEX - REGION 19 stratum 56 : NUEVO LEON, moderately small sc |
| MEX1957 | MEX - REGION 19 stratum 57 : NUEVO LEON, very small schools |
| MEX2161 | MEX - REGION 21 stratum 61 : PUEBLA, large schools |
| MEX2162 | MEX - REGION 21 stratum 62 : PUEBLA, moderately small school |
| MEX2163 | MEX - REGION 21 stratum 63 : PUEBLA, very small schools |
| MEX2264 | MEX - REGION 22 stratum 64 : QUERETARO, large schools |
| MEX2265 | MEX - REGION 22 stratum 65 : QUERETARO, moderately small sch |
| MEX2266 | MEX - REGION 22 stratum 66 : QUERETARO, very small schools |
| MEX2367 | MEX - REGION 23 stratum 67 : QUINTANA ROO, large schools |
| MEX2368 | MEX - REGION 23 stratum 68 : QUINTANA ROO, moderately small |
| MEX2369 | MEX - REGION 23 stratum 69 : QUINTANA ROO, very small school |
| MEX2470 | MEX - REGION 24 stratum 70 : SAN LUIS POTOSI, large schools |
| MEX2471 | MEX - REGION 24 stratum 71 : SAN LUIS POTOSI, moderately sma |
| MEX2472 | MEX - REGION 24 stratum 72 : SAN LUIS POTOSI, very small sch |
| MEX2573 | MEX - REGION 25 stratum 73 : SINALOA, large schools |
| MEX2574 | MEX - REGION 25 stratum 74 : SINALOA, moderately small schoo |
| MEX2575 | MEX - REGION 25 stratum 75 : SINALOA, very small schools |
| MEX2779 | MEX - REGION 27 stratum 79 : TABASCO, large schools |
| MEX2780 | MEX - REGION 27 stratum 80 : TABASCO, moderately small schoo |
| MEX2781 | MEX - REGION 27 stratum 81 : TABASCO, very small schools |
| MEX2882 | MEX - REGION 28 stratum 82 : TAMAULIPAS, large schools |
| MEX2883 | MEX - REGION 28 stratum 83 : TAMAULIPAS, moderately small sc |
| MEX2884 | MEX - REGION 28 stratum 84 : TAMAULIPAS, very small schools |
| MEX2985 | MEX - REGION 29 stratum 85 : TLAXCALA, large schools |
| MEX2986 | MEX - REGION 29 stratum 86 : TLAXCALA, moderately small scho |
| MEX2987 | MEX - REGION 29 stratum 87 : TLAXCALA, very small schools |
| MEX3088 | MEX - REGION 30 stratum 88 : VERACRUZ, large schools |
| MEX3089 | MEX - REGION 30 stratum 89 : VERACRUZ, moderately small scho |
| MEX3090 | MEX - REGION 30 stratum 90 : VERACRUZ, very small schools |
| MEX3191 | MEX - REGION 31 stratum 91 : YUCATAN, large schools |
| MEX3192 | MEX - REGION 31 stratum 92 : YUCATAN, moderately small schoo |
| MEX3193 | MEX - REGION 31 stratum 93 : YUCATAN, very small schools |
| MEX3294 | MEX - REGION 32 stratum 94 : ZACATECAS, large schools |
| MEX3295 | MEX - REGION 32 stratum 95 : ZACATECAS, moderately small sch |
| MEX3296 | MEX - REGION 32 stratum 96 : ZACATECAS, very small schools |
| MEX9101 | MEX - REGION 91 stratum 01 : [NO Region 99 and above] Prv. U |
| MEX9102 | MEX - REGION 91 stratum 02 : [NO Region 99 and above] Prv. U |
| MEX9103 | MEX - REGION 91 stratum 03 : [NO Region 99 and above] Prv. U |
| MEX9104 | MEX - REGION 91 stratum 04 : [NO Region 99 and above] Aut. G |
| MEX9105 | MEX - REGION 91 stratum 05 : [NO Region 99 and above] Cen. S |
| MEX9106 | MEX - REGION 91 stratum 06 : [NO Region 99 and above] Dec. S |
| MEX9107 | MEX - REGION 91 stratum 07 : [NO Region 99 and above] Oth. G |
| MEX9108 | MEX - REGION 91 stratum 08 : [NO Region 99 and above] Cen. F |
| MEX9109 | MEX - REGION 91 stratum 09 : [NO Region 99 and above] Oth. T |
| MEX9110 | MEX - REGION 91 stratum 10 : [NO Region 99 and above] CONALE |
| MEX9111 | MEX - REGION 91 stratum 11 : [NO Region 99 and above] Oth. P |
| MEX9797 | Undisclosed STRATUM - Mexico |
| MNE0001 | MNE - stratum 01 : A-Primary-Central |
| MNE0002 | MNE - stratum 02 : A-Primary-North |
| MNE0003 | MNE - stratum 03 : A-Primary-South |
| MNE0004 | MNE - stratum 04 : B-Gimnazija-Central |
| MNE0005 | MNE - stratum 05 : B-Gimnazija -North |
| MNE0006 | MNE - stratum 06 : B-Gimnazija -South |
| MNE0007 | MNE - stratum 07 : C-Vocational-Central |
| MNE0008 | MNE - stratum 08 : C-Vocational-North |
| MNE0009 | MNE - stratum 09 : C-Vocational-South |
| MNE0010 | MNE - stratum 10 : D-Mixed-North |
| MNE0011 | MNE - stratum 11 : D-Mixed-South |
| MNE9797 | Undisclosed STRATUM - Montenegro |
| MYS0101 | MYS - stratum 01 : MOE Fully Residential School |
| MYS0102 | MYS - stratum 02 : MOE National Secondary School |
| MYS0103 | MYS - stratum 03 : MOE Religious School |
| MYS0104 | MYS - stratum 04 : MOE Technical School |
| MYS0106 | MYS - stratum 06 : non-MOE Other Schools |
| MYS0201 | MYS - stratum 01 : MOE Fully Residential School |
| MYS0202 | MYS - stratum 02 : MOE National Secondary School |
| MYS0203 | MYS - stratum 03 : MOE Religious School |
| MYS0204 | MYS - stratum 04 : MOE Technical School |
| MYS0205 | MYS - stratum 05 : non-MOE MARA Junior Science College |
| MYS0206 | MYS - stratum 06 : non-MOE Other Schools |
| MYS9797 | Undisclosed STRATUM - Malaysia |
| NLD0001 | NLD - stratum 01 : 01_PRO/VMBO |
| NLD0002 | NLD - stratum 02 : 02_HAVO/VWO |
| NLD0003 | NLD - stratum 03 : 03_General Education |
| NLD0004 | NLD - stratum 04 : 04_Private Education |
| 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 : Stratum 1:Large schools (250+) |
| NZL0102 | NZL - stratum 02 : Stratum 2:Medium large schools (> 29 and |
| NZL0202 | NZL - stratum 02 : Stratum 2:Medium large schools (> 29 and |
| NZL0203 | NZL - stratum 03 : Stratum 3:Small schools (<30) |
| NZL9797 | Undisclosed STRATUM - New Zealand |
| PER0001 | PER - stratum 01 : Public/Urban |
| PER0002 | PER - stratum 02 : Public/Rural |
| PER0003 | PER - stratum 03 : Private/Urban |
| PER0004 | PER - stratum 04 : Private/Rural |
| PER9797 | Undisclosed STRATUM - Peru |
| POL0001 | POL - stratum 01 : 1 – Public Gymnasium |
| POL0002 | POL - stratum 02 : 2 – Private Gymnasium |
| POL0003 | POL - stratum 03 : 3 – Lycee |
| POL0004 | POL - stratum 04 : 4 – Vocational” |
| POL9797 | Undisclosed STRATUM - Poland |
| PRI0072 | PRI - stratum 72 : PUERTO RICO |
| PRT0001 | PRT - stratum 01 : Alentejo - Alentejo Central |
| PRT0002 | PRT - stratum 02 : Alentejo - Alentejo Litoral |
| PRT0003 | PRT - stratum 03 : Alentejo - Alto Alentejo |
| PRT0004 | PRT - stratum 04 : Alentejo - Baixo Alentejo |
| PRT0005 | PRT - stratum 05 : Alentejo - Lezíria do Tejo |
| PRT0006 | PRT - stratum 06 : Algarve - Algarve |
| PRT0007 | PRT - stratum 07 : Centro - Baixo Mondego |
| PRT0008 | PRT - stratum 08 : Centro - Baixo Vouga |
| PRT0009 | PRT - stratum 09 : Centro - Beira Interior Norte |
| PRT0010 | PRT - stratum 10 : Centro - Beira Interior Sul |
| PRT0011 | PRT - stratum 11 : Centro - Cova da Beira |
| PRT0012 | PRT - stratum 12 : Centro - Dão Lafões |
| PRT0013 | PRT - stratum 13 : Centro - Médio Tejo |
| PRT0014 | PRT - stratum 14 : Centro - Oeste |
| PRT0015 | PRT - stratum 15 : Centro - Pinhal Interior Norte |
| PRT0016 | PRT - stratum 16 : Centro - Pinhal Interior Sul |
| PRT0017 | PRT - stratum 17 : Centro - Pinhal Litoral |
| PRT0018 | PRT - stratum 18 : Centro - Serra da Estrela |
| PRT0019 | PRT - stratum 19 : Lisboa - Grande Lisboa |
| PRT0020 | PRT - stratum 20 : Lisboa - Península de Setúbal |
| PRT0021 | PRT - stratum 21 : Norte - Alto Trás-os-Montes |
| PRT0022 | PRT - stratum 22 : Norte - Ave |
| PRT0023 | PRT - stratum 23 : Norte - Cávado |
| PRT0024 | PRT - stratum 24 : Norte - Douro |
| PRT0025 | PRT - stratum 25 : Norte - Entre Douro e Vouga |
| PRT0026 | PRT - stratum 26 : Norte - Grande Porto |
| PRT0027 | PRT - stratum 27 : Norte - Minho Lima |
| PRT0028 | PRT - stratum 28 : Norte - Tâmega |
| PRT0029 | PRT - stratum 29 : Região Autónoma da Madeira |
| PRT0030 | PRT - stratum 30 : Região Autónoma dos Açores |
| PRT9797 | Undisclosed STRATUM - Portugal |
| QAT0001 | QAT - stratum 01 : 1 – Independent |
| QAT0002 | QAT - stratum 02 : 2 – Independent complex |
| QAT0003 | QAT - stratum 03 : 3 – Community |
| QAT0004 | QAT - stratum 04 : 4 – International |
| QAT0005 | QAT - stratum 05 : 5 – Private |
| QAT0006 | QAT - stratum 06 : 6 – Private complex |
| QAT9797 | Undisclosed STRATUM - Qatar |
| QCN0001 | QCN - stratum 01 : ISCED2/General/no selectivity |
| QCN0002 | QCN - stratum 02 : Mixed ISCED/General/no selectivity |
| QCN0003 | QCN - stratum 03 : ISCED3/General/model |
| QCN0004 | QCN - stratum 04 : ISCED3/General/ordinary |
| QCN0005 | QCN - stratum 05 : Vocational/no selectivity |
| QCN9797 | Undisclosed STRATUM - Shanghai-China |
| QRS0059 | QRS - stratum 59 : Perm Territory |
| QRS9797 | Undisclosed STRATUM - Perm(Russian Federation) |
| QUA0112 | Florida (USA) - Stratum 12 |
| QUA9797 | Undisclosed STRATUM - Florida (USA) |
| QUB0209 | Connecticut (USA) - Stratum 09 |
| QUB9797 | Undisclosed STRATUM - Connecticut (USA) |
| QUC0325 | Massachusetts (USA) - Stratum 25 |
| QUC9797 | Undisclosed STRATUM - Massachusetts (USA) |
| QUD0472 | Puerto Rico (USA) - Stratum 72 |
| QUD9797 | Undisclosed STRATUM - Puerto Rico |
| ROU0001 | ROU - stratum 01 : (1) GIM |
| ROU0002 | ROU - stratum 02 : (2) LIC |
| ROU9797 | Undisclosed STRATUM - Romania |
| RUS0003 | RUS - stratum 03 : Republic of Bashkortostan |
| RUS0004 | RUS - stratum 04 : Republic of Buryatia |
| RUS0005 | RUS - stratum 05 : Republic of Dagestan |
| RUS0007 | RUS - stratum 07 : Kabardino-Balkarian Republic |
| RUS0009 | RUS - stratum 09 : Karachaevo-Chercessian Republic |
| RUS0012 | RUS - stratum 12 : Republic of Marij El |
| 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 |
| RUS0027 | RUS - stratum 27 : Khabarovsk territory |
| RUS0029 | RUS - stratum 29 : Arkhangelsk region |
| RUS0032 | RUS - stratum 32 : Bryansk region |
| RUS0034 | RUS - stratum 34 : Volgograd region |
| RUS0036 | RUS - stratum 36 : Voronezh region |
| RUS0038 | RUS - stratum 38 : Irkutsk region |
| RUS0039 | RUS - stratum 39 : Kaliningrad region |
| RUS0040 | RUS - stratum 40 : Kaluga region |
| RUS0042 | RUS - stratum 42 : Kemerovo region |
| RUS0043 | RUS - stratum 43 : Kirov 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 |
| RUS0071 | RUS - stratum 71 : Tula region |
| RUS0072 | RUS - stratum 72 : Tyumen region |
| RUS0074 | RUS - stratum 74 : Chelyabinsk region |
| RUS0077 | RUS - stratum 77 : The City of Moscow |
| RUS0078 | RUS - stratum 78 : The City of Sankt-Petersburg |
| RUS0079 | RUS - stratum 79 : Jewish autonomous region |
| RUS9797 | Undisclosed STRATUM - Russian Federation |
| SGP0101 | SGP - stratum 01 : Public Secondary |
| SGP0201 | SGP - stratum 01 : Public Secondary |
| SGP0203 | SGP - stratum 03 : Private Secondary |
| SGP9797 | Undisclosed STRATUM - Singapore |
| SRB0001 | SRB - stratum 01 : Prim |
| SRB0002 | SRB - stratum 02 : Voj Gym |
| SRB0003 | SRB - stratum 03 : Voj Tech |
| SRB0004 | SRB - stratum 04 : Voj Oth |
| SRB0005 | SRB - stratum 05 : Bel Gym |
| SRB0006 | SRB - stratum 06 : Bel Tech |
| SRB0007 | SRB - stratum 07 : Bel Oth |
| SRB0008 | SRB - stratum 08 : West Gym |
| SRB0009 | SRB - stratum 09 : West Tech |
| SRB0010 | SRB - stratum 10 : West Oth |
| SRB0011 | SRB - stratum 11 : East Gym |
| SRB0012 | SRB - stratum 12 : East Tech |
| SRB0013 | SRB - stratum 13 : East Oth |
| SRB0014 | SRB - stratum 14 : South Gym |
| SRB0015 | SRB - stratum 15 : South Tech |
| SRB0016 | SRB - stratum 16 : South Oth |
| SRB9797 | Undisclosed STRATUM - Serbia |
| SVK0001 | SVK - stratum 01 : Region 1 / ZS |
| SVK0002 | SVK - stratum 02 : Region 1 / GYM |
| SVK0003 | SVK - stratum 03 : Region 1 / others |
| SVK0004 | SVK - stratum 04 : Region 2 / ZS |
| SVK0005 | SVK - stratum 05 : Region 2 / GYM |
| SVK0006 | SVK - stratum 06 : Region 2 / others |
| SVK0007 | SVK - stratum 07 : Region 3 / ZS |
| SVK0008 | SVK - stratum 08 : Region 3 / GYM |
| SVK0009 | SVK - stratum 09 : Region 3 / others |
| SVK0010 | SVK - stratum 10 : Region 4 / ZS |
| SVK0011 | SVK - stratum 11 : Region 4 / GYM |
| SVK0012 | SVK - stratum 12 : Region 4 / others |
| SVK0013 | SVK - stratum 13 : Region 5 / ZS |
| SVK0014 | SVK - stratum 14 : Region 5 / GYM |
| SVK0015 | SVK - stratum 15 : Region 5 / others |
| SVK0016 | SVK - stratum 16 : Region 6 / ZS |
| SVK0017 | SVK - stratum 17 : Region 6 / GYM |
| SVK0018 | SVK - stratum 18 : Region 6 / others |
| SVK0019 | SVK - stratum 19 : Region 7 / ZS |
| SVK0020 | SVK - stratum 20 : Region 7 / GYM |
| SVK0021 | SVK - stratum 21 : Region 7 / others |
| SVK0022 | SVK - stratum 22 : Region 8 / ZS |
| SVK0023 | SVK - stratum 23 : Region 8 / GYM |
| SVK0024 | SVK - stratum 24 : Region 8 / others |
| SVK9797 | Undisclosed STRATUM - Slovak Republic |
| SVN0006 | SVN - stratum 00 : OS - elementary school |
| SVN0007 | SVN - stratum 00 : IO-adult educational programme |
| 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 |
| SVN9797 | Undisclosed STRATUM - Slovenia |
| SWE0001 | SWE - stratum 01 : PUB/ LOWER SEC/ METRO |
| SWE0002 | SWE - stratum 02 : PUB/ LOWER SEC/ OTHER LARGE |
| SWE0003 | SWE - stratum 03 : PUB/ LOWER SEC/ AT LEAST 12500 |
| SWE0004 | SWE - stratum 04 : PUB/ LOWER SEC/ MANUFACTURING |
| SWE0005 | SWE - stratum 05 : PUB/ LOWER SEC/ SPARSE POP |
| SWE0006 | SWE - stratum 06 : PUB/ UPPER SEC |
| SWE0007 | SWE - stratum 07 : INDEP/ LOWER SEC/ METRO |
| SWE0008 | SWE - stratum 08 : INDEP/ LOWER SEC/ OTHER LARGE |
| SWE0009 | SWE - stratum 09 : INDEP/ LOWER SEC/ AT LEAST 12500 |
| SWE0010 | SWE - stratum 10 : INDEP/ LOWER SEC/ MANUFACTURING |
| SWE0011 | SWE - stratum 11 : INDEP/ LOWER SEC/ SPARSE POP |
| SWE0012 | SWE - stratum 12 : INDEP/ UPPER SEC |
| SWE9797 | Undisclosed STRATUM - Sweden |
| TAP0101 | TAP - stratum 01 : Gen. Jr. HS. Pub. Rur. |
| TAP0102 | TAP - stratum 02 : Gen. Jr. HS. Pub. Urb. |
| TAP0103 | TAP - stratum 03 : Gen. Jr. HS. Prv. Rur. |
| TAP0104 | TAP - stratum 04 : Gen. Jr. HS. Prv. Urb. |
| TAP0105 | TAP - stratum 05 : Gen. Sr. HS. Pub. Rur. |
| TAP0106 | TAP - stratum 06 : Gen. Sr. HS. Pub. Urb. |
| TAP0107 | TAP - stratum 07 : Gen. Sr. HS. Prv. Rur. |
| TAP0108 | TAP - stratum 08 : Gen. Sr. HS. Prv. Urb. |
| TAP0109 | TAP - stratum 09 : Voc. Sr. HS. Pub. Rur. |
| TAP0110 | TAP - stratum 10 : Voc. Sr. HS. Pub. Urb. |
| TAP0111 | TAP - stratum 11 : Voc. Sr. HS. Prv. Rur. |
| TAP0112 | TAP - stratum 12 : Voc. Sr. HS. Prv. Urb. |
| TAP0213 | TAP - stratum 13 : Mix. Sr. HS. Pub. Rur. |
| TAP0214 | TAP - stratum 14 : Mix. Sr. HS. Pub. Urb. |
| TAP0215 | TAP - stratum 15 : Mix. Sr. HS. Prv. Rur. |
| TAP0216 | TAP - stratum 16 : Mix. Sr. HS. Prv. Urb. |
| TAP0317 | TAP - stratum 17 : Comh. HS. Pub. Rur. |
| TAP0318 | TAP - stratum 18 : Comh. HS. Pub. Urb. |
| TAP0319 | TAP - stratum 19 : Comh. HS. Prv. Rur. |
| TAP0320 | TAP - stratum 20 : Comh. HS. Prv. Urb. |
| TAP0321 | TAP - stratum 21 : Cmpx. HS. Pub. Rur. |
| TAP0322 | TAP - stratum 22 : Cmpx. HS. Pub. Urb. |
| TAP0323 | TAP - stratum 23 : Cmpx. HS. Prv. Rur. |
| TAP0324 | TAP - stratum 24 : Cmpx. HS. Prv. Urb. |
| TAP0325 | TAP - stratum 25 : FY Coll. Pub. Rur. |
| TAP0326 | TAP - stratum 26 : FY Coll. Pub. Urb. |
| TAP0327 | TAP - stratum 27 : FY Coll. Prv. Rur. |
| TAP0328 | TAP - stratum 28 : FY Coll. Prv. Urb. |
| TAP9797 | Undisclosed STRATUM - Chinese Taipei |
| THA0101 | THA - stratum 01 : Office of the Basic Education Commission/ |
| THA0102 | THA - stratum 02 : Office of the Basic Education Commission/ |
| THA0103 | THA - stratum 03 : Office of the Basic Education Commission/ |
| THA0204 | THA - stratum 04 : Office of the Private Education Commissio |
| THA0205 | THA - stratum 05 : Office of the Private Education Commissio |
| THA0206 | THA - stratum 06 : Office of the Private Education Commissio |
| THA0207 | THA - stratum 07 : Department of Education of Bangkok Metrop |
| THA0208 | THA - stratum 08 : Department of Education of Bangkok Metrop |
| THA0209 | THA - stratum 09 : Bureau of Local Educational Development a |
| THA0210 | THA - stratum 10 : Bureau of Local Educational Development a |
| THA0211 | THA - stratum 11 : Bureau of Local Educational Development a |
| THA0212 | THA - stratum 12 : Commission of Higher Education/Lower seco |
| THA0213 | THA - stratum 13 : Commission of Higher Education/Mixed |
| THA0214 | THA - stratum 14 : Vocational Education Commission/Upper Sec |
| THA0215 | THA - stratum 15 : Special schools with Math/Science focus/M |
| THA9797 | Undisclosed STRATUM - Thailand |
| 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 |
| TUR0001 | TUR - stratum 01 : TR1 PRIMARY |
| TUR0002 | TUR - stratum 02 : TR1 GENERAL SECONDARY |
| TUR0003 | TUR - stratum 03 : TR1 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0004 | TUR - stratum 04 : TR2 PRIMARY |
| TUR0005 | TUR - stratum 05 : TR2 GENERAL SECONDARY |
| TUR0006 | TUR - stratum 06 : TR2 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0007 | TUR - stratum 07 : TR3 PRIMARY |
| TUR0008 | TUR - stratum 08 : TR3 GENERAL SECONDARY |
| TUR0009 | TUR - stratum 09 : TR3 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0010 | TUR - stratum 10 : TR4 PRIMARY |
| TUR0011 | TUR - stratum 11 : TR4 GENERAL SECONDARY |
| TUR0012 | TUR - stratum 12 : TR4 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0013 | TUR - stratum 13 : TR4 POLICE EDUCATION |
| TUR0014 | TUR - stratum 14 : TR5 PRIMARY |
| TUR0015 | TUR - stratum 15 : TR5 GENERAL SECONDARY |
| TUR0016 | TUR - stratum 16 : TR5 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0017 | TUR - stratum 17 : TR5 POLICE EDUCATION |
| TUR0018 | TUR - stratum 18 : TR6 PRIMARY |
| TUR0019 | TUR - stratum 19 : TR6 GENERAL SECONDARY |
| TUR0020 | TUR - stratum 20 : TR6 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0021 | TUR - stratum 21 : TR7 PRIMARY |
| TUR0022 | TUR - stratum 22 : TR7 GENERAL SECONDARY |
| TUR0023 | TUR - stratum 23 : TR7 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0024 | TUR - stratum 24 : TR8 PRIMARY |
| TUR0025 | TUR - stratum 25 : TR8 GENERAL SECONDARY |
| TUR0026 | TUR - stratum 26 : TR8 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0027 | TUR - stratum 27 : TR9 PRIMARY |
| TUR0028 | TUR - stratum 28 : TR9 GENERAL SECONDARY |
| TUR0029 | TUR - stratum 29 : TR9 VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0030 | TUR - stratum 30 : TRA PRIMARY |
| TUR0031 | TUR - stratum 31 : TRA GENERAL SECONDARY |
| TUR0032 | TUR - stratum 32 : TRA VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0033 | TUR - stratum 33 : TRB PRIMARY |
| TUR0034 | TUR - stratum 34 : TRB GENERAL SECONDARY |
| TUR0035 | TUR - stratum 35 : TRB VOCATIONAL AND TECHNICAL SECONDARY |
| TUR0036 | TUR - stratum 36 : TRC PRIMARY |
| TUR0037 | TUR - stratum 37 : TRC GENERAL SECONDARY |
| TUR0038 | TUR - stratum 38 : TRC VOCATIONAL AND TECHNICAL SECONDARY |
| TUR9797 | Undisclosed STRATUM - Turkey |
| URY0001 | URY - stratum 01 : Public General Secondary Schools and Mil |
| URY0002 | URY - stratum 02 : Public General Secondary Schools and Mil |
| URY0003 | URY - stratum 03 : Public General Secondary Schools and Mil |
| URY0004 | URY - stratum 04 : Private General Secondary Schools,Lower s |
| URY0005 | URY - stratum 05 : Private General Secondary Schools,Mixed |
| URY0006 | URY - stratum 06 : Private General Secondary Schools,Upper s |
| URY0007 | URY - stratum 07 : Public Technical Secondary Schools,Lower |
| URY0008 | URY - stratum 08 : Public Technical Secondary Schools,Mixed |
| URY0009 | URY - stratum 09 : Public Technical Secondary Schools,Upper |
| URY0010 | URY - stratum 10 : Rural Schools with Lower Secondary Degree |
| URY9797 | Undisclosed STRATUM - Uruguay |
| USA1001 | USA - stratum 01 : Northeast-Private |
| USA1002 | USA - stratum 02 : Northeast-Public |
| USA1003 | USA - stratum 03 : Midwest-Private |
| USA1004 | USA - stratum 04 : Midwest-Public |
| USA1104 | USA - stratum 04 : Midwest-Public |
| USA1105 | USA - stratum 05 : South-Private |
| USA1106 | USA - stratum 06 : South-Public |
| USA1206 | USA - stratum 06 : South-Public |
| USA1207 | USA - stratum 07 : West-Private |
| USA1208 | USA - stratum 08 : West-Public |
| USA9797 | Undisclosed STRATUM - United States of America |
| VNM0101 | VNM - stratum 01 : North Viet Nam / Public / Urban |
| VNM0102 | VNM - stratum 02 : North Viet Nam / Public / Rural |
| VNM0103 | VNM - stratum 03 : North Viet Nam / Public / Remote area |
| VNM0104 | VNM - stratum 04 : North Viet Nam / Private / Urban |
| VNM0105 | VNM - stratum 05 : North Viet Nam / Private / Rural |
| VNM0106 | VNM - stratum 06 : North Viet Nam / Private / Remote area |
| VNM0207 | VNM - stratum 07 : Central Viet Nam / Public / Urban |
| VNM0208 | VNM - stratum 08 : Central Viet Nam / Public / Rural |
| VNM0209 | VNM - stratum 09 : Central Viet Nam / Public / Remote area |
| VNM0210 | VNM - stratum 10 : Central Viet Nam / Private / Urban |
| VNM0211 | VNM - stratum 11 : Central Viet Nam / Private / Rural |
| VNM0313 | VNM - stratum 13 : Southern Viet Nam / Public / Urban |
| VNM0314 | VNM - stratum 14 : Southern Viet Nam / Public / Rural |
| VNM0315 | VNM - stratum 15 : Southern Viet Nam / Public / Remote area |
| VNM0316 | VNM - stratum 16 : Southern Viet Nam / Private / Urban |
| VNM0317 | VNM - stratum 17 : Southern Viet Nam / Private / Rural |
| VNM9797 | Undisclosed STRATUM - Viet Nam |
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.