I agree with the Commuter. I'm currently completing the 3rd semester of my ADN program (I'm doing the LVN upgrade program at my college). One of the girls in my class, who was also doing the LVN upgrade, was asked to leave because she questioned everything her clinical instructor told her to do, i.e. as a student, make sure you give insulin with the RN being present, etc. In any case, she's having a hard time finding another school that would accept her into their program because she was kicked off another program.
So the best thing to do is to go back to your previous school, finish what you started, keep your mouth shut and do what they tell you to do. Ultimately the goal is to get your RN. Good-luck!