In what ways would schools change if there were no exams or grades?

I’m taking a maths course at the moment. Most of my classmates are taking it for credit, I’m just there to learn.

I’ve found that I am much more motivated to study, and happier in class. I think that’s because I am not constantly worrying about the contents of an upcoming exam. When my classmates ask questions, their stress is easily visible. I, on the other hand, am able to just relax, and treat the problems as riddles.

I can’t help feeling sorry for all the frantic students in the world.