| Value | Category |
|---|---|
| 00 | Nursery school or grade 1 |
| 01 | Grade 1 |
| 02 | Grade 2 |
| 03 | Grade 3 |
| 04 | Grade 4 |
| 05 | Grade 5 |
| 06 | Grade 6 |
| 07 | Grade 7 |
| 08 | Grade 8 |
| 09 | Grade 9 |
| 10 | Grade 10 |
| 11 | Grade 11 |
| 12 | Grade 12 or General Certificate of Education (GCE) Ordinary |
| 13 | General Certificate of Education (GCE) Advanced or undergraduate |
| 14 | Certificate or diploma |
| 15 | Bachelor's degree |
| 16 | Master's degree and above |
| 99 | NIU (not in universe) |