I don't think that much of the show's fan base of older than 15, as well. I seem to remember threads asking if it's appropriate for 10-12 year olds, so you should be fine.
I chose, and my world was shaken. So what?
The choice may have been mistaken. The choosing was not.
I saw it when I was 15, but with my uncle who felt comfortable taking me, and I felt comfortable seeing it with him. It deals with a lot of stuff that could be considered controversial, but it depends on you. I think it's an important show for all teens and parents.