| Value | Category | Cases | |
|---|---|---|---|
| 1 | 8th grade of Primary School or 1st year of High School | 358 |
25.3%
|
| 2 | 9th grade of Primary School or 2nd year of High School | 502 |
35.5%
|
| 3 | 1st grade of Polymodal School or 3rd year of High School | 556 |
39.3%
|
| Sysmiss | 37 |