| Value | Category |
|---|---|
| 1 | No School |
| 2 | Some primary (p1-p6 but not p7) |
| 3 | Completed primary p7 |
| 4 | Vocational school |
| 5 | Some secondary school (s1-s3, not s4) |
| 6 | Completed secondary |
| 7 | Completed advanced level or A level |
| 8 | Some / Completed Tertiary |
| 9 | Some / Completed University |