| Value | Category |
|---|---|
| 00 | No education |
| 01 | Higher education completed |
| 02 | Comprehensive secondary |
| 03 | Vocational secondary |
| 04 | Post-secondary |
| 05 | Secondary |
| 06 | Secondary not completed |
| 07 | Vocational |
| 08 | Primary completed |
| 09 | Primary not completed |
| 98 | Unknown |
| 99 | NIU (not in universe) |