| Value |
Category |
| 00 |
NIU (not in universe) |
| 10 |
None |
| 20 |
Primary |
| 21 |
Primary, grade 1 |
| 22 |
Primary, grade 2 |
| 23 |
Primary, grade 3 |
| 24 |
Primary, grade 4 |
| 25 |
Primary, grade 5 |
| 26 |
Primary, grade 6 |
| 30 |
Lower secondary: basic |
| 31 |
Basic, grade 7 |
| 32 |
Basic, grade 8 |
| 33 |
Basic, grade 9 |
| 40 |
Lower secondary: skilled manual |
| 41 |
Skilled manual, grade 1 |
| 42 |
Skilled manual, grade 2 |
| 43 |
Skilled manual, grade 3 |
| 44 |
Skilled manual, grade 4 |
| 45 |
Skilled manual, grade 5 |
| 50 |
Upper secondary: pre-university |
| 51 |
Pre-university, grade 10 |
| 52 |
Pre-university, grade 11 |
| 53 |
Pre-university, grade 12 |
| 60 |
Upper secondary: mid-level technical |
| 61 |
Mid-level technical, grade 1 |
| 62 |
Mid-level technical, grade 2 |
| 63 |
Mid-level technical, grade 3 |
| 64 |
Mid-level technical, grade 4 |
| 65 |
Mid-level technical, grade 5 |
| 70 |
Upper secondary: mid-level teaching |
| 71 |
Mid-level teaching, grade 1 |
| 72 |
Mid-level teaching, grade 2 |
| 73 |
Mid-level teaching, grade 3 |
| 74 |
Mid-level teaching, grade 4 |
| 75 |
Mid-level teaching, grade 5 |
| 80 |
Higher education |
| 81 |
Higher education, grade 1 |
| 82 |
Higher education, grade 2 |
| 83 |
Higher education, grade 3 |
| 84 |
Higher education, grade 4 |
| 85 |
Higher education, grade 5 |
| 86 |
Higher education, grade 6 |
| 87 |
Higher education, grade 7 |
| 99 |
Unknown |
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.