| Value | Category | Cases | |
|---|---|---|---|
| 1 | Free | 19 | 
                                                                 
                                    
                                    73.1%
                                 
                                                             | 
                                                        
                    
| 2 | Some students must pay | 4 | 
                                                                 
                                    
                                    15.4%
                                 
                                                             | 
                                                        
                    
| 3 | All must pay | 3 | 
                                                                 
                                    
                                    11.5%
                                 
                                                             |