| Value | Category | 
                                    
                    
                        | 0 | Pre-school/Kindergarten | 
                                    
                    
                        | 1 | Class one | 
                                    
                    
                        | 2 | Class two | 
                                    
                    
                        | 3 | Class three | 
                                    
                    
                        | 4 | Class four | 
                                    
                    
                        | 5 | Class five | 
                                    
                    
                        | 6 | Class six | 
                                    
                    
                        | 7 | Class seven | 
                                    
                    
                        | 8 | Class eight | 
                                    
                    
                        | 9 | Class nine | 
                                    
                    
                        | 10 | Class ten | 
                                    
                    
                        | 11 | Class eleven | 
                                    
                    
                        | 12 | Class twelve | 
                                    
                    
                        | 13 | Secondary school certificate | 
                                    
                    
                        | 14 | Technical/vocational pre-secondary diploma/certificate | 
                                    
                    
                        | 15 | Technical/vocational post-secondary diploma/certificate | 
                                    
                    
                        | 16 | College/university undergraduate | 
                                    
                    
                        | 17 | College /university graduate | 
                                    
                    
                        | 18 | Post-graduate | 
                                    
                    
                        | 19 | Other | 
                                    
                    
                        | 90 | None | 
                                    
                    
                        | 95 | Never attended school | 
                                    
                    
                        | 98 | Don't know | 
                                    
                    
                        | Sysmiss |  | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.