That's not the real issue MM. The family company has traded in the middle east for thirty years.
The issue is not the quality of the decision making, its the quality of the communication style. There is nothing wrong with the abilities of the students at all.
The trouble is the tradition of answering "yes" to authority figures. As in: " do you know why you protect the nosewheel"?"yes" "Do you know how to protect the nosewheel?" "Yes".
Even I got that one wrong but there were four more who demonstrated that they didn't know either.
As a general rule when the circuit fills up with people who can't speak English very well, I do a full stop because I prefer to be the dumbest person in the circuit, as I was when I started flying. I just don't like having to look out for people who are as dumb as I used to be.
Call me selfish, you are right.