| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not observed | 31078 |
98%
|
| 1 | One student | 18 |
0.1%
|
| 2 | Small group of students (groups to 2 to 6) | 123 |
0.4%
|
| 3 | Large group of students (groups of more than 6) | 506 |
1.6%
|