What about having your child write a handwritten note to the teacher apologizing? (You can help feed them reasons if they can't think of any good ones!). We always tell our kids to try and respect teachers since they are poorly paid, are dong their best, etc.
We are planning on that, along with loss of screen time for the month. We have had this conversation with him at least three or four other times and always talk about how it affects the teacher and other students. He fixes the behavior then backslides. It's maddening. Starting to worry that it is a character defect.