| Value | Category | Cases | |
|---|---|---|---|
| 1 | 7TH | 1198 |
30.9%
|
| 2 | 8TH | 1299 |
33.5%
|
| 3 | First year of the high school | 1035 |
26.7%
|
| 4 | 348 |
9%
|
|
| Sysmiss | 147 |