It all depends on the class expectations. I am in law school right now and most professors will post their previous tests in the library. But they make a new

It all depends on the class expectations. I am in law school right now and most professors will post their previous tests in the library. But they make a new one from scratch each semester that is similar too, but not the same as the last one. I have also had numerous classes in math where the instructor would hand out a superset of the test questions about a week ahead of time. The students had every single question in their hands early, they were just mixed in with a bunch of other similar ones. The difference is that everyone involved knew the rules ahead of time. Here that was not the case. Of course, that was not the case at least partially because the professor failed to lay out the rules in a forthright fashion.