My daughter is 5 1/2, she came home singing A,E,I,O,U and sometimes Y and W. I thought she was nuts, my sisters are all teachers and assured me she was correct. I asked the girls I work with who ask the teachers at the public school their kids attend, they said there was no such thing that it must be a "private school thing". Now that I read this, it does make sense-who knew? I'm printing this out for the "public school" teachers to read.