| Value | Category |
|---|---|
| 1 | None |
| 2 | (I - V) Primary education |
| 3 | (VI - VIII) Junior secondary education |
| 4 | (IX - X) Secondary education |
| 5 | (XI - XII) Higher secondary education |
| 6 | (XIII - XVI) Bachelors |
| 7 | (XVII - XVIII) Masters |
| 8 | Doctorate/Higher Degree |
| 99 | Don't Know/Refused . |