They dont pick on your because youre the smartest kid in the class, which youre probably not, they most likely pick on you because youre socially awkward, you apparently suck up to the teacher, and judging by your avatar you probably flaunt your brony status IRL too.
I saw a kid walking down the hallway a week ago with a shirt that said "brony" and had a MLP on it, I will imagine you as him for now on.