| Value | Category |
|---|---|
| 1 | No technical education |
| 2 | Technical degree in agriculture / engineering / technology / medicine etc. |
| 3 | Diploma or certificate in agriculture |
| 4 | Diploma or certificate in engineering/technology |
| 5 | Diploma or certificate in medicine |
| 6 | Diploma or certificate in crafts |
| 9 | Diploma or certificate in other subjects |