| Value | Category | Cases | |
|---|---|---|---|
| 1 | 6th grade | 412 |
20.1%
|
| 2 | 7th grade | 647 |
31.6%
|
| 3 | 8th grade | 555 |
27.1%
|
| 4 | 9th grade | 433 |
21.2%
|
| Sysmiss | 21 |