We would stay before the exam and harder after the exam so as to pass the makeup exam.
This way we remember better, and study things that we didnt study before. Mostly the makeup exams were much easier and we would get good grades.
You will not understand and you will never get in the league of the people who have to retake their exams.
Whats wrong with the people these day? They are always looking for the short cut. No long term planning. No emphasis on education.
God help the new generation.

"Pratice makes perfect"