Are we supposed to like the sadistic, abusive teacher?

Rating: 9/10 (9 March 2015)

Wow, where to start?
Well first of all, there are two characters in the film, two!
The stupid romance thing was unnecessary and very forced.
And oh my god the teacher throwing chairs at kids and slapping them?? Ridiculous and unrealistic.
And why didn't the teacher ever yell at anyone else except for Teller's character?? He only did it once and that was just to assert his dominance to the audience, which was very very very obvious. Why was the teacher just angry at the quiet drummer??
So so so unrealistic on all aspects and I just wanted this terrible production to end.
And what was up with them bleeding after drumming too hard? As a friend of a drummer, I know that no matter how hard you played, if you were a good drummer you would never start bleeding.
Terrible