Follow the Chain of Command!
 As tempting as it is don't call the superintendent and demand your teachers head on a platter. You need to follow your chain of command and that means speaking to the teacher first and then you have your assistant principal and your principal there at the school. If that doesn't work then you call the superintendent because any good superintendent will first ask you if you spoke to the teacher first. Never listen to your friends because the first thing they will tell you is get the teacher fired! Even though they weren't there and have no idea what is going on other than what they've heard from you so ignore them.