Teschers who say “only 60% of this class is going to pass” ok? I guess you’re very bad at your job then? Imagine a baker would say “only 60% of my bread can be eaten” or a carpenter says “60% of my furniture can be used” well? Your job is to TEACH, your job is to give the knowledge you have to other people. Yes, some people might not pass but you should try to teach it to them in the best way possible. Your goal should be to get the people through the class, to encourage them, not to give them anxiety and fear about you, your class and your exams.