| Value | Category |
|---|---|
| 1 | NO FORMAL EDUCATION |
| 2 | NOT HAVING COMPLETED PRIMARY EDUCATION |
| 3 | HAVING COMPLETED PRIMARY EDUCATION |
| 4 | HAVING COMPLETED BASIC SECONDARY SCHOOL |
| 5 | HAVING COMPLETED SECONDARY SCHOOL |
| 6 | GRADUATED UNIV/COLLEGE/SPECIALIZED SECONDARY EDUCATION |
| 7 | HAVING BEEN POST-GRADUATED |
| 77 | DON'T KNOW |
| 99 | REFUSED |