Halton, Omani student arrive to learn to be engineers, prior to this they had a year or so in the USA learning English mainly from a techniclal point of view, so few were very good at conversing in the language.
During one of the first classes as the instructor was talking one of the Omani's was chatting at the back of the class, it turned out he was the one with half decent English and was having to translate for the rest of the course. This continued like this until the exams.
Exam day and papers were passed around, the Omani translates the question and then simultaneously they all tick a box... this continued until the exam was finished and was scored, everyone one of them had the same answers... I do not know what they did after that.
I know they were looking to send one home until it was found his family (poor) would be in disgrace and would have to pay back all of the USA / UK course costs entailed, so he scraped through.