| Value | Category | 
                                    
                    
                        | -9 | Don't Know | 
                                    
                    
                        | -8 | Refused | 
                                    
                    
                        | -5 | Not Applicable | 
                                    
                    
                        | -3 | Missing | 
                                    
                    
                        | 0 | Grade R/0 | 
                                    
                    
                        | 1 | Grade 1/Sub A/Class 1 | 
                                    
                    
                        | 2 | Grade 2/Sub B/Class 2 | 
                                    
                    
                        | 3 | Grade 3/Std. 1 | 
                                    
                    
                        | 4 | Grade 4/Std. 2 | 
                                    
                    
                        | 5 | Grade 5/Std. 3 | 
                                    
                    
                        | 6 | Grade 6/Std. 4 | 
                                    
                    
                        | 7 | Grade 7/ Std. 5 | 
                                    
                    
                        | 8 | Grade 8/ Std. 6/Form 1 | 
                                    
                    
                        | 9 | Grade 9/Std. 7/Form 2 | 
                                    
                    
                        | 10 | Grade 10/ Std. 8/Form 3 | 
                                    
                    
                        | 11 | Grade 11/ Std. 9/Form 4 | 
                                    
                    
                        | 12 | Grade 12/Std. 10/Form 5/Matric/Senior Certificate | 
                                    
                    
                        | 13 | NTC 1 | 
                                    
                    
                        | 14 | NTC 2 | 
                                    
                    
                        | 15 | NTC 3 | 
                                    
                    
                        | 16 | Certificate with less than Grade 12/Std 10 | 
                                    
                    
                        | 17 | Diploma with less than Grade 12/Std 10 | 
                                    
                    
                        | 18 | Certificate with Grade 12/Std 10 | 
                                    
                    
                        | 19 | Diploma with Grade 12/Std 10 | 
                                    
                    
                        | 20 | Bachelors degree - Level 4 | 
                                    
                    
                        | 21 | Bachelors degree and Diploma | 
                                    
                    
                        | 22 | Honours degree | 
                                    
                    
                        | 23 | Higher degree (Masters Doctorate) | 
                                    
                    
                        | 24 | Other | 
                                    
                    
                        | 25 | No Schooling | 
                                    
                    
                        | 55 | No Higher Education | 
                                    
                    
                        | 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.