Agree! As someone, who's started stuttering at age 3/4 and hasn't stopped since, I can definitely advice to see a speech therapist and/or a psychologist. 'Don't worry about it' from the teacher isn't a good approach for the problem. My family also didn't put a lot effort in the therapies, because 'stuttering will pass away' and 'she will outgrow it', but this didn't happen. Now I can't attain my biggest dream, and even though I'm fairly OK with stuttering, I'd really advocate to do everything for your son what's possible in order to make the stuttering disappear.