Disrupts Classes for No Good Reason Whether it's to make a joke or just because they like attention, a bad student will disrupt a class discussion for no good reason. They are the ones who take out their phone in class and then argue that a teacher can't take your phone when it gets confiscated,It has to do with lack of respect, self-disipline, self-control and self-motivation. They have little respect for opinions of parents and teachers. They are not responsible, do not behave and do not care about learning.