It all depends on the community your high school is in. There's nothing in the language of Edges that is inappropriate. By that, I mean that there is no foul language or sexually explicit lyrics. Some of the subjects can be perceived as mature ("Man of My Dreams" can have a very positive or very negative reaction). Again, it all depends on the community. There isn't TECHNICALLY anything inappropriate. If you're that worried, however, you might want to check out another revue: Starting Here, Starting Now. A great show and very appropriate.