| Value | Category |
|---|---|
| 0 | N/A |
| 1 | no primary |
| 2 | general primary |
| 3 | incomplete secondary |
| 4 | complete secondary |
| 5 | vocational training with diploma on secondary education |
| 6 | vocational training without diploma on secondary education |
| 7 | secondary professional (secondary special) |
| 8 | incomplete higher education |
| 9 | higher education |
| 10 | postgraduate education |