| Value | Category | Cases | |
|---|---|---|---|
| 1 | 6th grade primary | 6 |
0.2%
|
| 2 | 1st grade secondary | 136 |
3.7%
|
| 3 | 2nd grade secondary | 1337 |
36.7%
|
| 4 | 3rd grade secondary | 1207 |
33.1%
|
| 5 | 4th grade secondary | 928 |
25.5%
|
| 6 | 5th grade secondary | 32 |
0.9%
|
| Sysmiss | 50 |