| Value | Category |
|---|---|
| 1 | Cannot read or write |
| 2 | Left school without CPSS (Certificate of Primary School Studies) |
| 3 | Received CPSS |
| 4 | Received middle school certificate (BEPC) or equivalents (BE, BI, CAP) |
| 5 | Interim certification (BAC1) |
| 6 | Full baccalaureate (BAC2) |
| 7 | University degree |
| 9 | Unknown |