We did that last year that is explaining him that the teacher is the authority and he needs to abide by the classroom rules. I don't know if he started behaving well because he eventually understood the rules or because the teacher eventually realized that he was advanced and started challenging him. Now with the start of the new academic year and a new teacher, we are back at where we started. I don't know what lies in the future for us, its exhausting to see this getting repeated every year but yah we'll try, thanks for the support!