Speech therapy, patients and support - The priority for these is the same. Anything dad - or anyone, for that matter - wants to do to help that is beyond being patient, is NOT going to help. I'm repeating some of what others said because of the importance. Finishing words, filling in, whatever, is probably the worst thing anyone can do, especially at this age. Tell the teachers, his friends parents, his friends, your friends. Ride around in a car with a megaphone and tell everyone. Finishing words and such is effectively saying - You can't do this, let me do it for you. THAT is what is going to make it difficult moving forward. As for the support, encourage the talking. If he's embarrassed, reinforce that it isn't a problem or something to be embarrassed about. Support isn't - "It's okay" "Take your time" "Relax" "Slow down" or anything of the sort. It's already a stressful situation, these approaches only add to that. Regarding getting easier: Some people get great benefit from therapy, so try that. For me, it was coming to terms with stuttering. I now - for the most part - own it. It isn't my "problem", it's other peoples problem if they're inpatient or being rude. These have been my personal experiences, others may differ. I hope the feedback from all will help in some fashion.