| Value | Category |
|---|---|
| 1 | None |
| 11 | Kindergarten |
| 21 | Primary 1 |
| 22 | Primary 2 |
| 23 | Primary 3 |
| 24 | Primary 4 |
| 25 | Primary 5 |
| 26 | Primary 6 |
| 31 | JSS 1_3 |
| 41 | SSS 1_3 |
| 51 | Voc/Commerial |
| 61 | Teacher_Training |
| 62 | Techical |
| 63 | Nursing |
| 71 | Tertiary_Cert |
| 72 | Terciary_Degree |
| 73 | Terciary_PostGra |
| 81 | Koranic |
| 92 | Others |