I agree that many, many shows (especially recent ones) shouldn't be done, mainly do to the budget needed to pull them off respectably. However, I don't think most shows should be considered unreachable for high school students. Youth doesn't necessarily equal ignorance or lack of talent. Yes, it's harder for adolescents to relate to characters in more "mature" shows, but isn't that what acting is all about? Stretching beyong our nature personality and knowledge? As for me, I'd rather see (and be in) a lower quality "adult" show that tests and challenges the students, rather than a solid one that simply allows them to show how cute they are.
What's pink and green and flies all over?