| Value | Category | Cases | |
|---|---|---|---|
| 1 | 7th grade | 521 |
27%
|
| 2 | 8th grade | 443 |
22.9%
|
| 3 | 9th grade | 177 |
9.2%
|
| 4 | 10th grade | 286 |
14.8%
|
| 5 | 11th grade | 246 |
12.7%
|
| 6 | 12th grade | 258 |
13.4%
|
| Sysmiss | 5 |