Hope things get better for you. You prolly dont need to make friends with other parents, although its a plus, but talk to the teacher often and start soon if you haven't already. Its prolly a freak 1-day thing. He just didnt want to get bossed by a random person (his teacher) and got angry at them. He wont act like that again once he figures out that the teachers are his parents when he's at school and he should do everything they tell him to do. Maybe the teachers were outta line---you never know lol. Just throwing it out there.