| Value | Category |
|---|---|
| 1 | Illiterate |
| 2 | Does not have primary education but can read and write |
| 3 | Primary education |
| 4 | Lower secondary education |
| 5 | Upper secondary education |
| 6 | Vocational program |
| 7 | Secondary professional program |
| 8 | Higher professional program |
| 9 | Bachelor or equivalent |
| 10 | Master or equivalent |
| 11 | Doctor or equivalent |