Can i get kick out of a class because i didnt meet the prerequisites?

So to be in an AP class next year you have to have at least one A in social studies or language arts, scored a 5 in the CST, and have a teacher recommendation. If you didn't meet these requirements you had to take a writing sample, and depending on that they would or wouldn't let you in. During the middle of the semester when we were getting recommendations for the classes i made all of these prerequisites. Now the end of the year is here, and all our classes for next year have been put into the system. However, i got a B on my final which dropped my history grade to a B, and I got a B in language arts. Now im really scared they will kick me out of my AP class for next year, even though i've already been enrolled for the class. Since the writing sample was months ago there is nothing i can do to try to get in, if i get kicked out. Someone please tell me if they can even still kicked me out, even though i've already been enrolled. HELP :(