Teacher help?

Okay, so I've had this teacher for the whole year and his personality really clashes with mine. He is outgoing and very detail-oriented to the point where it hurts. I am really introverted and tend to talk less than him. He put on my interim that I slouch in my chair and that I look tired in cl, even though I've never fallen asleep ever in the cl. He says I don't participate enough, and that I "sit in the cl stone-faced". My grade is a D-, but I've turned all work in on time, he is just very detailed and seems to correct everything I do, even though the things I write make sense. This is an english cl BTW and I've already told my parents what goes on. Any advice from you guys? Thanks