| Value | Category | 
|---|---|
| 100 | None | 
| 110 | Illiterate | 
| 120 | Read only | 
| 130 | Read AND write | 
| 140 | Literacy classes/certificate | 
| 150 | Never attended school | 
| 160 | KG | 
| 170 | Koranic KG (Kouttab) | 
| 180 | Attending elementary school and did not complete first level | 
| 200 | Primary/Lower secondary | 
| 210 | Primary | 
| 220 | Preparatory | 
| 230 | Lower secondary | 
| 240 | Professional/Vocational below secondary education | 
| 300 | Secondary | 
| 310 | Academic secondary | 
| 320 | Professional/Vocational secondary | 
| 400 | Post secondary or equivalent | 
| 500 | University | 
| 600 | Postgraduate | 
| 610 | High diploma | 
| 620 | Masters | 
| 630 | PhD | 
| 999 | Not stated |