But both are correct. I know which students can understand English. This is not about who's smarter, it is about who really studied. That's the only fair system. Well, let's present a bit more evidence.
Sports clubs are also insanely hard.
In my school, the girl's field hockey team practices 360 days a year. The better the college, the better the job offer. Once they become workers in Japanese companies, they are expected to be in the office until 9 or 10 at night. My friend is an engineer for Panasonic. He doesn't get overtime for that.