I don't get it. Call them out. I hated dealing with the cheating at my school. I hated that their GPA got them the same considerations as mine.
The worst part was the lazy faculty that did nothing. I built a bit of a reputation around publically reprimanding students in class when they acted like brats. This was not my job and it alienated me from much of the of the student body.
Unfortunately I had to do it because my class would have never moved forward. So I guess it's not just my school? Professors have lost control all over and simple things like cheating have some kind of grey area?
FYI: Mostly Americans at my school.