| Value | Category | 
|---|---|
| 1 | no formal schooling | 
| 2 | some primary school | 
| 3 | primary school completed | 
| 4 | some high school | 
| 5 | high school completed | 
| 6 | some university/college | 
| 7 | university/college completed | 
| 8 | post-grad | 
| 9 | other post matric qualifications | 
| 10 | don't know | 
| 98 | refused | 
| 99 | missing data |