| Value |
Category |
| 00 |
None |
| 11 |
Kindergarten |
| 21 |
Primary, 1st grade |
| 22 |
Primary, 2nd grade |
| 23 |
Primary, 3rd grade |
| 24 |
Primary, 4th grade |
| 25 |
Primary, 5th grade |
| 26 |
Primary, 6th grade |
| 31 |
Secondary Academic, 1st year |
| 32 |
Secondary Academic, 2nd year |
| 33 |
Secondary Academic, 3rd year |
| 34 |
Secondary Academic, 4th year |
| 35 |
Secondary Academic, 5th year |
| 41 |
Secondary Technical, 1st year |
| 42 |
Secondary Technical, 2nd year |
| 43 |
Secondary Technical, 3rd year |
| 44 |
Secondary Technical, 4th year |
| 45 |
Secondary Technical, 5th year |
| 46 |
Secondary Technical, 6th year |
| 51 |
Technical college, 1st year |
| 52 |
Technical college, 2nd year |
| 53 |
Technical college, 3rd year |
| 61 |
University, 1st year |
| 62 |
University, 2nd year |
| 63 |
University, 3rd year |
| 64 |
University, 4th year |
| 65 |
University, 5th year |
| 66 |
University, 6th year |
| 67 |
University, 7th year |
| 68 |
University, 8th year |
| 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.