| Value | Category |
|---|---|
| .. | |
| 00 | None |
| 01 | Pre-school |
| 11 | Standard 1 |
| 12 | Standard 2 |
| 13 | Standard 3 |
| 14 | Standard 4 |
| 15 | Standard 5 |
| 16 | Standard 6 |
| 17 | Standard 7 |
| 18 | Standard 8 |
| 21 | Form 1 |
| 22 | Form 2 |
| 23 | Form 3 |
| 24 | Form 4 |
| 25 | Form 5 |
| 26 | Form 6 |
| 31 | University |
| 41 | Vocational |
| 42 | Teacher training |
| 43 | Technical |