| Value | Category |
|---|---|
| 1 | Nursery 1 |
| 2 | Class 1 |
| 3 | Class 2 |
| 4 | Class 3 |
| 5 | Class 4 |
| 6 | Class 5 |
| 7 | Class 6 |
| 8 | JSS 1 |
| 9 | JSS 2 |
| 10 | JSS 3 |
| 11 | SSS1/Form 4 |
| 12 | SSS2?Form 5 |
| 13 | SSS3/Form 6 |
| 14 | SSS4 |
| 15 | GCE |
| 16 | College Students |
| 17 | University Undergraduate Students |
| 18 | Certificates |
| 19 | Diploma |
| 20 | Post Graduate Diploma Student |
| 21 | Bachelors Degree |
| 22 | Masters Degree or Higher |
| Sysmiss |