Dear Mike! I think that you must talk to your friend even if you don't want to talk to him. Explain him that he is doing a bad thing and he can face many problems after. For example he can argue with his teacher if the teacher see him cheating. Also he can get problems with understanding the subject. If your friends doesn't understand that then help him. Explain the subject. Don't argue,solve the problem peaceflly. Your friend will understand you and you will resolve the conflict. Continue your good comunication (friendship). Then tell me how you solved the problem. With love your friend Masha.