Well if you're presnting this, i'm assuming (from my HS experience) that more than half of them don't give a crap about broadway. Instead of playing songs they will probably hate and are boring to even most theatre fans, try some fresher, newer, edgier music so they'll be more interested. Try some HEDWIG, RENT, TABOO, HAIRSPRAY, etc.
"If you are going to do something, do it well. And leave something witchy."
-Charlie Manson