| Value | Category | Cases | |
|---|---|---|---|
| 1 | 6th grade primary | 3 |
0.3%
|
| 2 | 1st grade secondary | 22 |
2.2%
|
| 3 | 2nd grade secondary | 449 |
45.2%
|
| 4 | 3rd grade secondary | 296 |
29.8%
|
| 5 | 4th grade secondary | 223 |
22.4%
|
| 6 | 5th grade secondary | 1 |
0.1%
|
| Sysmiss | 27 |