| Value | Category |
|---|---|
| 1 | HIGHER EDUCATION |
| 2 | INCOMPLETE HIGHER |
| 3 | SECONDARY PROFESSIONAL |
| 5 | GENERAL SECONDARY COMPLETE |
| 6 | GENERAL SECONDARY INCOMPLETE |
| 7 | ELEMENTARY |
| 8 | NO ELEMENTARY |
| 9 | ILLITERATE |
| 41 | PROFESSIONAL TECHNICAL: WITH GENERAL SECONDARY |
| 42 | PROFESSIONAL TECHNICAL: WITHOUT GENERAL SECONDARY |
| Sysmiss |