J.S.
my little boy just started kindergarten as well, but he went to junior k last year so pretty much knew what to expect. i find that just talking alot about school, about being good and not focusing on him being bad helps. he comes home everyday telling me how many stickers he got, etc. also i've noticed he's had a few accidents at night in the last couple weeks, i think it's just the change and probably being tired too. i told my son if he was good all 5 days this week,(getting up in the morning, at school, and at bedtime) he could pick out a toy on friday at walmart. this morning, he was really excited about going and "using his manners" so that he might get more stickers on his chart at school and pick out a toy. try focusing on the good and not the bad so much, and also rewarding for good behavior. good luck.