My son becomes angry at school and does not listen and obey the teacher ( ex. cleaning up, transition to a new activity). He throws toys and gets into conflicts with some of the other kids because he always wants to be right. In his words, "I want to do, what I want to do and I don't want to do, what I don't want to do". Will something like "Tickets" or "The Chart' work in a school setting so I can reinforce at home. If so, what would be the best way for it to be implemented?