| Value | Category |
|---|---|
| 1 | NO CERTIFICATE, ILLITERATE |
| 2 | NO CERTIFICATE, ONLY READ |
| 3 | NO CERTIFICATE, READ AND WRITE |
| 4 | ELEMENTARY |
| 5 | INTERMEDIATE (MID SCHOOL) |
| 6 | PREPARATORY |
| 7 | VOCATIONAL |
| 8 | DIPLOMA FROM AN INSTITUTION |
| 9 | BACHELOR DEGREE |
| 10 | HIGHER DIPLOMA |
| 11 | MASTERS DEGREE |
| 12 | PHD. (DOCTORATE) |
| 13 | OTHER |