How does that mean that “logically, the OP is right”? Even if it’s true that the teacher had no experience in band (do we know that?), the OP behaved in a way that raised a red flag with the teacher and sounds like it was disrespectful. Sorry, but it sounds like the OP feels entitled to disrupt class and is not happy to have to deal with any type of repercussion. He or she has been given some great advice from folks here on this thread that I hope will be taken in the spirit it was given.