| Value | Category | Cases | |
|---|---|---|---|
| 0 | Pre-primary or none | 129 |
9.5%
|
| 1 | Primary | 472 |
34.9%
|
| 2 | Lower secondary | 283 |
20.9%
|
| 3 | Upper secondary | 273 |
20.2%
|
| Sysmiss | 195 |
14.4%
|