You should definitely give it a try. It's kinda silly at times but whoever is writing it does a GREAT job putting enough teen stuff in there to keep teens/preteens interested and enough adult stuff to keep the adults interested, imo.
Basically, it's about this school club, Glee Club, that is (to be cliche) beating the odds and being amazing. Haha There's also a few underlying plots that keep things interesting. I'm horrible at explaining things in a way that makes them sound good so I'll just leave the real explaining to someone who explains better.