E.
My son has acted the same way since entering kindergarten. I have done time outs with those only aggravating him more. What has worked for me is that when he gets home he has a snack and some quiet time. He is drained when he gets home. I stopped bombarding him with questions when he got home and just kind of waited for him to be ready to talk. It is now January and he is very pleasant when he gets home. He talks about his day and because I have given him the chance to have quiet time when he comes home, he recognizes when he needs it now. It has not been easy but it is finally working. Good luck