| Value |
Category |
| 01 |
Preschool, first year |
| 02 |
Preschool, second year |
| 03 |
Preschool, kindergarten |
| 04 |
Elementary, initiation course |
| 05 |
Elementary, preparatory course |
| 06 |
Elementary, 1st year |
| 07 |
Elementary, 2nd year |
| 08 |
Middle school, 1st year |
| 09 |
Middle school, 2nd year |
| 10 |
Secondary, first cycle, sixth (6th) |
| 11 |
Secondary, first cycle, fifth (5th) |
| 12 |
Secondary, first cycle, fourth (4th) |
| 13 |
Secondary, first cycle, thrid (3rd) |
| 14 |
Secondary, second cycle, second class |
| 15 |
Secondary, second cycle, first class |
| 16 |
Secondary, second cycle, final class |
| 17 |
Higher education, 1st year |
| 18 |
Higher education, 2nd year |
| 19 |
Higher education, Bachelor's or 3rd year |
| 20 |
Higher education, Master's or 4th year |
| 21 |
Higher education, DEA or 5th year |
| 22 |
Higher education, 6th year |
| 23 |
Higher education, 7th year |
| 24 |
Higher education, 8th year or more |
| 99 |
NIU (not in universe) |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.