The institution was far from elite; they used to send staff on recruitment drivs in faraway places, because (a) overseas students get to come th this country when otherwise they wouldn't get a visa; and (b) they pay more. The result was that many of the students were rich, and assumed they didn't have to work. Many didn't have basic qualifications for doing the work. So they cheated extensively (there was no web and no WhatsApp; they just copied one-another's coursework submissions).
I asked my experienced colleagues what to do. They said that I could report the cheating to the school; but I would then be tied up in exam boards all summer, for which I wouldn't be paid. Also I could expect to have to fight charges of racism. Alternatively I could explain to them the difference between helping one-another out (good) and plagiarism (bad). Guess which choice I took!
Basically, the institution didn't care about plagiarism; they didn't care about the unfairness to honest students; and I don't think they cared whether the students learned anything. By the next year, I didn't care either. I just delivered the material, and went home.