| Value | Category |
|---|---|
| 0 | Not gone to school/Entered year one only/ECD |
| 1 | Completed Year 1 |
| 2 | Completed Year 2 |
| 3 | Completed Year 3 |
| 4 | Completed Year 4 |
| 5 | Completed Year 5 |
| 6 | Completed Year 6 |
| 7 | Completed Year 7 |
| 8 | Completed Year 8(KCPE) |
| 9 | Completed Year 9 |
| 10 | Completed Year 10 |
| 11 | Completed Year 11 |
| 12 | Completed Year 12( KCSE) |
| 13 | Form 6 |
| 14 | Technical College |
| 15 | College Diploma/Certificate |
| 16 | Completed some years at university |
| 17 | Completed university degree |
| 18 | Postgraduate work |
| 30 | |
| 33 | |
| 50 | |
| 555 | |
| 888 | |
| 999 | |
| Sysmiss |