| Value | Category | Cases | |
|---|---|---|---|
| 1 | 7th grade | 293 |
19.7%
|
| 2 | 8th grade | 391 |
26.2%
|
| 3 | 9th grade | 455 |
30.5%
|
| 4 | 10th grade | 306 |
20.5%
|
| 5 | Technical college -1 course | 45 |
3%
|
| Sysmiss | 5 |