| Value | Category | 
                                    
                    
                        | 0 | Did not complete any schooling | 
                                    
                    
                        | 1 | 1st Grade | 
                                    
                    
                        | 2 | 2nd Grade | 
                                    
                    
                        | 3 | 3rd Grade | 
                                    
                    
                        | 4 | 4th Grade | 
                                    
                    
                        | 5 | 5th Grade | 
                                    
                    
                        | 6 | 6th Grade | 
                                    
                    
                        | 7 | 7th Grade | 
                                    
                    
                        | 8 | 8th Grade | 
                                    
                    
                        | 9 | 9th Grade | 
                                    
                    
                        | 10 | 10th Grade | 
                                    
                    
                        | 11 | 11th Grade | 
                                    
                    
                        | 12 | 12th Grade | 
                                    
                    
                        | 13 | Incomplete higher education | 
                                    
                    
                        | 14 | Completed higher education | 
                                    
                    
                        | 15 | Incomplete university education | 
                                    
                    
                        | 16 | Completed university education | 
                                    
                    
                        | 17 | Adult literacy program participation only | 
                                    
                    
                        | 18 | Other literacy program only | 
                                    
                    
                        | 19 | Some Church/Mosque School | 
                                    
                    
                        | 20 | Other | 
                                    
                    
                        | 21 | Do not know | 
                                    
                    
                        | 999 | Missing | 
                            
            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.