I'd rather avoid the question about ethics in this case. Is it ethical to accept payment for teaching? Is it ethical to charge as much for as (some of) US unive

I'd rather avoid the question about ethics in this case. Is it ethical to accept payment for teaching? Is it ethical to charge as much for as (some of) US univerities do? Is it ethical to devise a test in such a way that a number of students will certainly fail? Is it ethical to prevent students from cheating? You can bend the word just as long until it means something like "might it cause any harm at all?" But if you ask yourself: why do the students take this course, you can think the reason is to learn something. If they want a piece of paper that proves that, they can't cheat. If you --cynically-- assume that students only take the course to get their diploma with as little effort as possible, then cheating is allowed. As long as schools want to teach something, they should stay away from online or take-home exams and essays. If they want something else (and usually the motivator here is money), the value of their education will drop.