| Value | Category |
|---|---|
| 0 | No schooling |
| 1 | Sub A/ grade 1 |
| 2 | Sub B/grade 2 |
| 3 | Std 1 |
| 4 | Std 2 |
| 5 | Std 3 |
| 6 | Std 4 |
| 7 | Std 5 |
| 8 | Std 6/Form 1 |
| 9 | Std 7/Form 2 |
| 10 | Std 8/Form 3 |
| 11 | Std 9/Form 4 |
| 12 | Std 10/Form 5 |
| 13 | NTC I |
| 14 | NTC II |
| 15 | NTC III |
| 16 | Diploma/certificate with Std 9 or lower |
| 17 | Diploma/certificate with Std 10 |
| 18 | Degree |
| 19 | Other |