drop a class?

I have to write about something I was thinking of. My friend wants to drop a class at St.Johns University. I feel so bad because she likes the class and she feels like the class is really easy. She was telling me how the teacher told her that she will get no more than a C after the final, that means even if she does god on the final she will get a C. I told her she should drop it, I think it is really unfair when a teacher tells you something discussing, like you are guaranteed to fail. I mean this girl is such a good girl and she goes to class, I feel so bad. I mean what happened to the kids that sleep, or do not show up!
I hate this about school! I can't understand how the test come out of the text book, why do you HAVE to show up to class? it is observe.
I don't understand this school, you know at first I liked it but now I am starting to think that they are nice in the beginning and then mean in the end, It's not fair and it is not good, but things happen. I always say this, if I was a teacher I would not want some one to fail, I don't know what to say. I feel bad. I told her that Spring Break is coming and if she does not want to drop it to do extra credit. I hope for the best for her.