| Value | Category |
|---|---|
| -9 | Don't know (SPONTANEOUS) |
| 1 | University degree or higher |
| 2 | Completed Secondary school including Vocational |
| 3 | Preparatory or Incomplete Secondary school |
| 4 | Completed Primary school |
| 5 | Incomplete Primary school or did not enter school |
| Sysmiss |