| Value | Category |
|---|---|
| 0 | |
| 1 | NONE / PRE-PRIMARY |
| 2 | |
| 3 | |
| 4 | |
| 5 | |
| 6 | |
| 7 | |
| 8 | |
| 9 | |
| 10 | |
| 11 | FOR CLASSES IN PRIMARY / SECONDARY SCHOOL, RECORD CLASS NUMBER |
| 12 | GRADE 12 GCE (O-LEVEL) |
| 13 | GRADE 12 GCE (A-LEVEL) |
| 14 | COLLEGE / UNIVERSITY |
| 15 | UNIVERSITY POSTGRADUATE |
| 16 | MASTER'S DEGREE |
| 17 | DOCTORAL LEVEL |
| 91 | |
| Sysmiss |