I have been teaching for 5 years. I have the reputation of being tough, demanding and fair, and my students love me. Once in a while I have students that I absolutly cannot reach. They arrive late (which of course disrupt the class), have no personal discipline, and constantly disrupt the class with their talking. I tried talking to them outside of class but it does not work. The only recourse I have is to ask them to leave the class and go talk to the director so that the rest of the class can learn. The other students appreciate their leaving, the director supports me as it seems that my class is not the only class these students disrupt but I feel guilty. I would appreciate any ideas on how to reach these discipline challenged students. Thank you