| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1.Visible in classroom | 653 | 
                            
                             
                                
                                52.7%
                                                             
                            
                         | 
                        
                    
| 2 | 2.In classroom, not visible | 71 | 
                            
                             
                                
                                5.7%
                                                             
                            
                         | 
                        
                    
| 3 | 3.Not in classroom but available | 302 | 
                            
                             
                                
                                24.4%
                                                             
                            
                         | 
                        
                    
| 4 | 4.Not available | 213 | 
                            
                             
                                
                                17.2%
                                                             
                            
                         | 
                        
                    
| 5 | 5.Missing | 0 | 
                            
                             
                                
                                0%
                                                             
                            
                         | 
                        
                    
| 6 | 6.Others | 0 | 
                            
                             
                                
                                0%
                                                             
                            
                         |