I have not used a musical in the classroom as an educational tool, mainly becasue I have never formally taught in a classroom, but I do have friends who have. A close friend of mine used "Joseph and the Amazing Technicolor Dreamcoat" while she was teaching a unit on the Holocaust. She used the song "Close Every Door to Me" as a way to show the oppression of the Jewish people in biblical times. She then linked it to the Holocaust by having the students break down the lyrics. They also listened to the song to get the feel of the music.