| Value | Category | Cases | |
|---|---|---|---|
| 1 | 9th grade | 524 |
29.8%
|
| 2 | 10th grade | 520 |
29.5%
|
| 3 | 11th grade | 430 |
24.4%
|
| 4 | 12th grade | 287 |
16.3%
|
| Sysmiss | 28 |