| Value | Category | Cases | |
|---|---|---|---|
| 1 | not compulsory | 5 |
2.8%
|
| 2 | primary only | 15 |
8.3%
|
| 3 | through start of secondary | 105 |
58%
|
| 5 | through completion of secondary | 56 |
30.9%
|
| Sysmiss | 12 |