| Value |
Category |
| 00 |
None |
| 11 |
Preschool, year 1 |
| 12 |
Preschool, year 2 |
| 13 |
Preschool, year 3 |
| 21 |
Primary, grade 1 |
| 22 |
Primary, grade 2 |
| 23 |
Primary, grade 3 |
| 24 |
Primary, grade 4 |
| 25 |
Primary, grade 5 |
| 26 |
Primary, grade 6 |
| 31 |
Secondary, grade 1 |
| 32 |
Secondary, grade 2 |
| 33 |
Secondary, grade 3 |
| 34 |
Secondary, grade 4 |
| 35 |
Secondary, grade 5 |
| 36 |
Secondary, grade 6 |
| 41 |
Basic technical, grade 1 |
| 42 |
Basic technical, grade 2 |
| 43 |
Basic technical, grade 3 |
| 44 |
Basic technical, grade 4 or more |
| 51 |
Middle technical, grade 1 |
| 52 |
Middle technical, grade 2 |
| 53 |
Middle technical, grade 3 |
| 54 |
Middle technical, grade 4 |
| 55 |
Middle technical, grade 5 or more |
| 61 |
Advanced technical, grade 1 |
| 62 |
Advanced technical, grade 2 |
| 63 |
Advanced technical, grade 3 |
| 64 |
Advanced technical, grade 4 |
| 65 |
Advanced technical, grade 5 or more |
| 71 |
University degree, year 1 |
| 72 |
University degree, year 2 |
| 73 |
University degree, year 3 |
| 74 |
University degree, year 4 |
| 75 |
University degree, year 5 |
| 76 |
University degree, year 6 |
| 77 |
University degree, year 7 |
| 98 |
Unknown |
| 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.