Best way to handle this in my experience that you stutter and its not something ya can control and that sometimes an answer will take longer. Almost all teachers will take it into account and that way ya can answer without worrying what she could say or do. Its scary to answer in class. I started uni and i stutter a lot when i am not in a flowing conversation. So answering is a hell. But i do it even tho 50 people can see and hear it. I do this to sort of control it. To say like yeah i stutter deal with it you all. And most people will admire that!!!!!