jk is 5 years old and was deaf up until he was four, when he started to talk he had a terrible stutter and could not get his words out. He now speaks okay apart from the odd sounds and words. He gets very frustrated when i cannot understand what he says to me. Other children have called him stupid and because he is quite a big boy they call him fatso, because of his size people mistake him for being older. I am concerned that his education has got behind and I am not sure the best ways to help him?.