| Value | Category |
|---|---|
| 00 | Not literate |
| 01 | Literate without formal schooling |
| 02 | Literate but below primary |
| 03 | Primary |
| 04 | Middle |
| 05 | Secondary |
| 06 | Graduate and above in agriculture |
| 07 | Graduate and above in engineering technology |
| 08 | Graduate and above in medicine |
| 09 | Graduate and above in other subjects |
| 99 | Unknown |