| Value | Category | Cases | |
|---|---|---|---|
| 1 | 7 grade | 277 |
16.1%
|
| 2 | 8 grade | 491 |
28.6%
|
| 3 | 9 grade | 537 |
31.3%
|
| 4 | 10 grade | 405 |
23.6%
|
| 5 | 11 grade | 6 |
0.3%
|
| 6 | 12 grade | 0 |
0%
|
| 7 | 13 grade | 1 |
0.1%
|
| Sysmiss | 25 |