My thoughts on the move Charlie Bartlett on dvd

I just watched the DVD of Charlie Bartlett. It's a good movie but it's not a clone of Rushmore like a lot of people online are saying. I watched it starting to think that, but it seems more like Pump Up The Volume with Christian Slater. They are both rebellious teenagers, both movies have a suicidal kid, both involve children of the principal, etc... Charlie Bartlett isn't as dark as Pump Up The Volume was though.