| Value | Category | 
                                    
                    
                        | 0 | No Grade Completed | 
                                    
                    
                        | 1 | Pre-school | 
                                    
                    
                        | 11 | Elem Grade 1 | 
                                    
                    
                        | 12 | Elem Grade 2 | 
                                    
                    
                        | 13 | Elem Grade 3 | 
                                    
                    
                        | 14 | Elem Grade 4 | 
                                    
                    
                        | 15 | Elem Grade 5 | 
                                    
                    
                        | 16 | Elem Grade 6 | 
                                    
                    
                        | 17 | Elem Graduate | 
                                    
                    
                        | 21 | HS Year 1 | 
                                    
                    
                        | 22 | HS Year 2 | 
                                    
                    
                        | 23 | HS Year 3 | 
                                    
                    
                        | 24 | HS Year 4 | 
                                    
                    
                        | 25 | HS Graduate | 
                                    
                    
                        | 31 | Post Sec. Year 1 | 
                                    
                    
                        | 32 | Post Sec. Year 2 | 
                                    
                    
                        | 41 | College Year 1 | 
                                    
                    
                        | 42 | College Year 2 | 
                                    
                    
                        | 43 | College Year 3 | 
                                    
                    
                        | 44 | College Year 4 | 
                                    
                    
                        | 45 | College Year 5 | 
                                    
                    
                        | 46 | College Year 6 | 
                                    
                    
                        | 47 | College Graduate | 
                                    
                    
                        | 51 | Post-Baccalaureate | 
                            
            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.