My whole future is at stake and I need guidance please Im desperate?

[Sasha]

I after five years of college I finally made it into the nursing program. I have invested my time and money to get to this point but my dream of becoming a nurse and getting myself out of this horrible environment which I live in might be ruined. The head teacher that I will have for a couple of years is just making my life a living hell. I feel like the nursing program is boot camp or a prison. The head professor is so horrible to all the students but especially to me. I told her that I have a documented disability and ever since that day she has made everything even more difficult for me. All of the students are keeping there mouths shut about her and they had told me to do the same. The only problem is she is not teaching me any new methods but in fact she is only criticizing me. In two weeks I have a competency exam and if I don’t pass is I am out of the program. I feel like telling her that her behavior of criticizing me and not showing me the procedure is horrible. I know if I state something to her the results will be horrible but im not learning anything and I cant afford to fail. Should I just keep my mouth shut and take the abuse or should I say that its not right the way she is treating me and that her behavior is not helping me learn the procedures? I have only one week until my exam !