[HUE]

In Japan's public education system, it's enough to come to class to pass. This includes university. In fact, a student can stop coming to junior high school, and he/she will still receive a diploma (but won't be able to continue on to high school).

It's happened a few times in my uni classes. The first time it happens in a class, I wake the student up. If he/she persists in sleeping, at the end of the class I tell him he/she was absent. This usually results in an indignant, "But I was here!" After that, students rarely fall asleep in class.

In classes with business professionals, or in conversation schools, sleeping has never been a problem.