| Value | Category |
|---|---|
| 0 | No education |
| 1 | Standard1 |
| 2 | Standard2 |
| 3 | Standard3 |
| 4 | Standard4 |
| 5 | Standard5 |
| 6 | Standard6 |
| 7 | Standard7 |
| 8 | Standard8 |
| 9 | Standard9 |
| 10 | Standard10 |
| 11 | Further studies incomplete |
| 12 | Diploma/other postschool complete |
| 13 | Further degree complete |
| 71 | Sub A/Class1 |
| 72 | Sub B/Class2 |