First, high school students have gone through the college entrance examination and want to relax. They think that universities should not study as hard as high schools, and it is too painful to fail the exam. Generally speaking, it is every child's nature to like to play. They have been studying since childhood, even at university. They think the road to learning is long and bumpy, so I don't think high school students are ready yet.
Second, high school students are urged to study by adults in high school and have no consciousness of their own study. Once they get to college, they are free, unable to control themselves, and can play whatever they want. Without their parents, they will be more extravagant. I have an example around me. I went to high school at home, and later I was admitted to a famous university, because this university is strict with students. So the topic of the final exam is also more difficult. As for him, as long as his parents are here, he will study, so he will not review during the exam, and several subjects in the exam are very poor. So I graduated from my senior year without a diploma or a degree certificate.
So most high school students are not ready, but whether they are ready or not, they have to accept that they have no choice, so they are warned to study hard in college.