| Value | Category |
|---|---|
| -7 | Legal skip |
| -3 | Interviewer error |
| -1 | Don't know |
| 1 | None or Pre-school education |
| 2 | Primary education |
| 3 | Basic education |
| 4 | General secondary education |
| 5 | Secondary education-vocational |
| 6 | Vocational level 4&5 |
| 7 | Bachelor degree |
| 8 | Masters degree |
| 9 | Doctorate |