| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 3 |
1.2%
|
| 1 | no education | 4 |
1.7%
|
| 2 | primary school (complete or not) | 9 |
3.7%
|
| 3 | secondary school (complete or not) | 42 |
17.4%
|
| 4 | vocational training | 14 |
5.8%
|
| 5 | some university training | 31 |
12.9%
|
| 6 | graduate degree | 138 |
57.3%
|