| Value | Category | Cases | |
|---|---|---|---|
| 1 | Mathayom 1 (7th grade) | 4840 |
25.2%
|
| 2 | Mathayom 2 (8th grade) | 6762 |
35.2%
|
| 3 | Mathayom 3 (9th grade) | 6277 |
32.7%
|
| 4 | Mathayom 4 (10th grade) | 664 |
3.5%
|
| 5 | Mathayom 5 (11th grade) | 651 |
3.4%
|
| Sysmiss | 680 |