| Value | Category | Cases | |
|---|---|---|---|
| 1 | No ability grouping between any classes | 3301 | 
                                    
                                    19.3%
                                 | 
| 2 | One of these forms of ability grouping between classes for s | 7034 | 
                                    
                                    41.2%
                                 | 
| 3 | One of these forms of ability grouping for all classes | 6734 | 
                                    
                                    39.5%
                                 | 
| 8 | Invalid | 12 | |
| 9 | Missing | 1058 |