| Value | Category |
|---|---|
| 1 | under age |
| 2 | illiterate |
| 3 | can read and write (does not hold a degree) |
| 4 | has a diploma for eradication illetarcy |
| 5 | below average degree (primary/preparatory) |
| 6 | secondary degree |
| 7 | technical secondary degree |
| 8 | above average degree but below university degree |
| 9 | university degree |
| 10 | above university degree (masters/ phd) |