| Value | Category |
|---|---|
| 00 | NR |
| 01 | not literate |
| 02 | literate without formal education |
| 03 | literate but below primary |
| 04 | primary |
| 05 | middle |
| 06 | secondary |
| 07 | higher secondary |
| 08 | certificate or diploma in agriculture |
| 09 | certificate or diploma in engineering/technology |
| 10 | certificate or diploma in other subjects |
| 11 | graduate and above in agriculture |
| 12 | graduate and above in engineering/technology |
| 13 | graduate and above in medicine |
| 14 | graduate and above in other subjects |
| 99 | Invalid |