| Value | Category | 
|---|---|
| -2147483648 | Not applicable | 
| -77 | Other, specify | 
| 0 | No Formal Education (never went to school) | 
| 1 | Pre-primary | 
| 2 | Primary | 
| 3 | Post-primary, vocational | 
| 4 | Secondary | 
| 5 | College, middle-level | 
| 6 | University undergraduate | 
| 7 | University postgraduate | 
| 8 | Madrassa/ Duksi |