| Value | Category |
|---|---|
| -77 | Other |
| 0 | No schooling |
| 1 | Madrassa |
| 2 | Primary |
| 3 | Secondary |
| 4 | Vocational Training |
| 5 | Tertiary |
| a | Don't know |
| b | Refused to answer |
| c | Outlier set to missing |
| d | Dropped during anonymization (available on request) |
| e | Skipped in error |
| z | Not applicable |