I'm a senior in highschool and I'm sitting in my Calculus class. We usually sit in groups in the class room and kids in my group dislike me so they go sit by their friends and I'm left alone feeling like a loser. But everytime this happens, the teacher will always shout across the room and ask "Are you ready for the test?" or shit like that and it bothers me because I kinda stutter and get all nervous and people stare at me and the teacher probably thinks I have issues which I do but I'm not going to tell him about it. How can I stop getting him to say shit like that but I don't want to confront him?