I don’t see the point of an exam where a 25% is a passing grade. Sounds like bad teaching to me. For most classes: say E&M or classical mechanics there are a

I don’t see the point of an exam where a 25% is a passing grade. Sounds like bad teaching to me. For most classes: say E&M or classical mechanics there are a finite number of problems that you can work out in a 3 hour exam. So you can study accordingly. For harder classes, we usually had take home exams. The take home exams were extremely demanding but doable. There was no way you could pass in class or take home exams with a 25% grade.