| Value | Category |
|---|---|
| 1 | Never enrolled |
| 2 | Enrolled basic education |
| 3 | Enrolled vocational and technical education before high school |
| 4 | Enrolled in high school |
| 5 | Enrolled vocational and technical education after high school |
| 6 | Enrolled at University |
| 7 | Previously enrolled |
| 9 | |
| Sysmiss |