| Value | Category |
|---|---|
| 1 | Don't read/ write |
| 2 | Without education but read/write |
| 3 | Day care or preschool |
| 4 | 1st/2nd grade |
| 5 | 3rd/4th grade |
| 6 | 5th/7th grade |
| 7 | 8th grade |
| 8 | incomplete high school |
| 9 | complete high school |
| 10 | Incomplete higher education |
| 11 | Complete higher education |
| 12 | Other |