| Value | Category |
|---|---|
| 10 | primary 4 |
| 12 | primary 7 |
| 14 | primary 8 |
| 15 | technical education |
| 16 | ordinarysecondary school |
| 17 | diploma |
| 18 | advance secondary education |
| 19 | advanced diploma |
| 20 | first degree |
| 21 | masters |
| 22 | phd |
| 33 | illiterate |
| 34 | literate but no schooling |
| 35 | ngo school completed |