| Value | Category | Cases | |
|---|---|---|---|
| 1 | 7th grade (basic education) | 586 |
19.3%
|
| 2 | 8th grade (basic education) | 463 |
15.3%
|
| 3 | 1st year of middle education | 499 |
16.4%
|
| 4 | 2nd year of middle education | 580 |
19.1%
|
| 5 | 3rd year of middle education | 464 |
15.3%
|
| 6 | 4th year of middle education | 443 |
14.6%
|
| Sysmiss | 26 |