| Value | Category |
|---|---|
| 0 | Pre-school |
| 1 | P1 |
| 2 | P2 |
| 3 | P3 |
| 4 | P4 |
| 5 | P5 |
| 6 | P6 |
| 7 | JSS1 |
| 8 | JSS2 |
| 9 | JSS3 |
| 10 | M1 |
| 11 | M2 |
| 12 | M3 |
| 13 | M4 |
| 14 | SSS1 |
| 15 | SSS2 |
| 16 | SSS3 |
| 17 | SSS4 |
| 18 | S1 |
| 19 | S2 |
| 20 | S3 |
| 21 | S4 |
| 22 | S5 |
| 23 | ''A'' Level |
| 24 | Voc/Tech/Computer/Comm/Agric |
| 25 | Comm/Agric |
| 26 | Teacher Training |
| 27 | Nursing |
| 28 | Polytechnic |
| 29 | University |
| 30 | Other Tertiary |
| 96 | Other (specify) |