| Value |
Category |
| 00 |
NIU (not in universe) |
| 10 |
None |
| 21 |
Preschool, grade 1 |
| 22 |
Preschool, grade 2 |
| 23 |
Preschool, grade 3 |
| 29 |
Preschool, grade unknown |
| 31 |
Primary, grade 1 |
| 32 |
Primary, grade 2 |
| 33 |
Primary, grade 3 |
| 34 |
Primary, grade 4 |
| 35 |
Primary, grade 5 |
| 36 |
Primary, grade 6 |
| 37 |
Primary, grade 7 |
| 38 |
Primary, grade unknown |
| 41 |
Lower secondary, grade 1 |
| 42 |
Lower secondary, grade 2 |
| 43 |
Lower secondary, grade 3 |
| 44 |
Lower secondary, grade 4 |
| 45 |
Upper secondary, grade 5 |
| 46 |
Upper secondary, grade 6 |
| 49 |
Secondary, grade unknown |
| 51 |
Tertiary, certificate or diploma after primary |
| 52 |
Tertiary, certificate or diploma after secondary |
| 53 |
Tertiary, undergraduate or graduate studies |
| 59 |
Tertiary, unknown level |
| 98 |
Unknown |
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.