I assume such events are fairly common, at least in the US. I was once colleague with a [nationality to be preserved, to avoid expanded blame] guy in a CS gradu

I assume such events are fairly common, at least in the US. I was once colleague with a [nationality to be preserved, to avoid expanded blame] guy in a CS graduate program, in the US, who had his sister (yes - different gender!) sitting a few exams for him, and passing them, of course.