| Value | Category | Cases | |
|---|---|---|---|
| 1 | Primary 7. class | 1699 |
38.1%
|
| 2 | Primary 8. class | 1179 |
26.4%
|
| 3 | High School 1. class | 1580 |
35.4%
|
| Sysmiss | 1762 |