| Value | Category |
|---|---|
| 0 | PRE-SCHOOL |
| 1 | STD 1 |
| 2 | STD 2 |
| 3 | STD 3 |
| 4 | STD 4 |
| 5 | STD 5 |
| 6 | STD 6 |
| 7 | STD 7 |
| 8 | STD 8 |
| 9 | FORM 1 |
| 10 | FORM 2 |
| 11 | FORM 3 |
| 12 | FORM 4 |
| 13 | FORM 5 |
| 14 | FORM 6 |
| 15 | UNIVER 1 |
| 16 | UNIVERSITY 2 |
| 17 | UNIVERSITY 3 |
| 18 | UNIVERSITY 4 |
| 19 | UNIVERSITY 5 & ABOVE |
| 20 | VOCATIONAL TRAINING |
| 21 | NO EDUCATION |
| 99 | NOT STATED |