Reading this thread breaks my heart. Belle don't wait around b/c I predict the issues will only get worse during this week. Reading your first description about the card change, my gut reaction is the teacher has already made up her mind about you and your child. (And yes, the kicking of the books deserved that change in color but her hardcore stance about not changing colors is another story especially when it was the first day.) She seems to be the type that rolls their eyes at parents who think their child is gifted. I wouldn't be surprised to see that she is one of the teachers I have seen talking on boards about parents thinking how perfect their kid is and pushing for acceleration when they themselves see no sign of it. You need to talk to her about her vocabulary choices and see if she understands your side and also about a possible change in the card system. If she doesn't allow them to earn the color back then how are they going to want to try? I suspect you will receive a less then warm response to all of this but keep pushing and contact the principle if she doesn't see your point.

Hopefully, you will walk in today and DS attitude will have changed. Maybe he and the teacher will have had a bonding experience, but if not ... don't do the wait and see game.