| Value | Category |
|---|---|
| 0 | Less than 1 year |
| 1 | Class 1 |
| 2 | Class 2 |
| 3 | Class 3 |
| 4 | Class 4 |
| 5 | Class 5 |
| 6 | Class 6 |
| 7 | Class 7 |
| 8 | Class 8 |
| 9 | Post primary |
| 10 | Form 1 |
| 11 | Form 2 |
| 12 | Form 3 |
| 13 | Form 4 |
| 14 | Form 5 |
| 15 | Form 6 |
| 16 | Middle level/diploma college |
| 17 | Undergraduate incomplete |
| 18 | University graduate complete |
| 19 | University post graduate |
| 20 | Non graded |
| 98 | DK |