| Value | Category |
|---|---|
| -9 | REFUSED |
| -7 | DON'T KNOW |
| 1 | NO FORMAL SCHOOLING |
| 2 | LESS THAN GRADE 7/STANDARD 5/AET 3/ABET 3 COMPLETED |
| 3 | GRADE 7/ STANDARD 5/ABET 3 COMPLETED |
| 4 | LESS THAN GRADE 12/ STANDARD 10/N6 / NTC 6 COMPLETED |
| 5 | GRADE 12/ STANDARD 10/ N6/ NTC 6 COMPLETED |
| 6 | COLLEGE/UNIVERSITY COMPLETED |
| 7 | POST GRADUATE DEGREE COMPLETED |