| Value | Category |
|---|---|
| 100 | None |
| 110 | Illiterate |
| 120 | Read only |
| 130 | Read & 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 |