| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not teach this subject | 1101 |
35.2%
|
| 2 | No textbooks available | 49 |
1.6%
|
| 3 | Yes | 1841 |
58.8%
|
| 4 | No | 139 |
4.4%
|