I've stuttered for all my life so far and I know how it feels. In school, I always have one of the same two reactions two my stutter. One: They treat me like I can't be smart because of my stutter, and like I always need help while speaking. Two: They make fun of my stutter, like it's something I can easily fix, which it isn't. It's frustrating when people act like this, but I suggest talking about your stutter to them. Explaining the situation to people who don't understand can really help the situation and cause people to stop treating you differently.