| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every or almost every lesson | 3 |
0.9%
|
| 2 | About half the lessons | 12 |
3.7%
|
| 3 | Some lessons | 210 |
65.4%
|
| 4 | Never | 89 |
27.7%
|
| 99 | Other (specify) | 7 |
2.2%
|