| Value | Category | Cases | |
|---|---|---|---|
| 1 | Class 7/Form 1 | 9 |
0.5%
|
| 2 | Class 8/Form 2 | 332 |
19.4%
|
| 3 | Form 3 | 704 |
41.2%
|
| 4 | Form 4 | 663 |
38.8%
|
| Sysmiss | 25 |