| Value | Category |
|---|---|
| 1 | None / Preprimary |
| 2 | Year 1 to 4 |
| 3 | Year 5 to 6 |
| 4 | Year 7 |
| 5 | Year 8 |
| 6 | Year 9 |
| 7 | Year 10 |
| 8 | Year 11 |
| 9 | Year 12, no diploma |
| 10 | Highschool graduate |
| 11 | Some college, no degree |
| 12 | Associate's degree, occupational |
| 13 | Associate's degree, academic |
| 14 | Bachelor's degree |
| 15 | Graduate / Professional degree |
| 16 | Other |