| Value | Category |
|---|---|
| 0 | Not literate |
| 1 | Literate without formal |
| 2 | Literate but below primary. |
| 3 | Primary |
| 4 | Middle |
| 5 | Secondary. |
| 6 | Graduate and Above in Agriculture |
| 7 | Graduate and Above in Engineering/Technology |
| 8 | Graduate and Above in Medicine. |
| 9 | Graduate and Above in Other Subjects. |
| 10 | |
| 99 | Invalid |
| Sysmiss |