| Value | Category |
|---|---|
| 01 | Completed higher education |
| 02 | Basic higher education |
| 03 | Higher initial education |
| 04 | Incomplete higher education (for those who graduated before 1996) |
| 05 | Completed secondary |
| 06 | Basic secondary |
| 07 | Primary general education |
| 08 | Do not have primary general |
| 09 | Not literate |
| 98 | Unknown |
| 99 | NIU (not in universe) |