An out of control teacher: This is either scary or a highly entertaining venue for students. Let’s consider the latter. How many students can deny that they get a quick and amusing thrill out of comments like this? “This year there are going to be two types of students in my class - good students and bad students. Who’s bad in this class? Just try me, because I’m already starting a list, even if this is only the first day of class!” Or how about this one? “I’m waitin...