| Value | Category |
|---|---|
| 1 | none |
| 2 | some elementary education |
| 3 | elementary education |
| 4 | upper secondary school (3 years) |
| 5 | upper secondary school (4 years) |
| 6 | upper secondary - generaly vocational |
| 7 | post-secondary, non- tertiary |
| 8 | short-cycle tertiary; baschelor?s or equivalent |
| 9 | post-graduate studies (master?s, doctoral) |
| 10 | do not know |