Of course your milage may vary, but in my experience (N=1) people have been asking it from start of high school to end of graduate school. Also, of course not e

Of course your milage may vary, but in my experience (N=1) people have been asking it from start of high school to end of graduate school. Also, of course not everyone asks, but many. Personally, I also do not think it is weird to ask, as it would be sad to miss points just for misunderstanding the material required for the exam.