Show children mental group grade children four nine age children acquire best proper point particular age AGE SCHOOL CHILD POINT ISSUE co co go school give diverse important subject washington april 6 capital service Ser capital city sympathy recent declaration luther dr rogers division children bright children large average group 60 per cent under children average slow learn third include 20 per cent children classification retardation children age ten school child except city child permitted inside school until ten age group air burbank experience age whereas children body vary mental age body dr agnes rogers goucher college baltimore drawn attention capital school need mental bank plant wizard cot |