Public Speaking

My public Speaking class is horrible the teacher does not want to post our grades about anything and I have gotten A's on everything but one speach and that was today. She told me I got a B on it and my grade was going to drop to a B. So I had to remind her that I had done a whole bunch of extra credit and how can one grade drop me and she was like "o yea thats right if forgot about that." She needs to tighten up or im going straight to the dean.