| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 258 |
9.6%
|
| 1 | Primary | 821 |
30.5%
|
| 2 | Lower secondary | 722 |
26.8%
|
| 3 | Upper secondary | 575 |
21.4%
|
| 4 | Higher | 5 |
0.2%
|
| Sysmiss | 310 |
11.5%
|