I was talking to a professor recently and he mentioned something that I found surprising. Namely, for graduate admissions in his department (top-30, US public) they had a whitelist of universities and they only consider applicants whose undergraduate studies were at one of those universities. He went on to complain that initially the list was too US-centric and it had to be expanded because they missed good international candidates.
I was very surprised by this. I did not know that this whitelist approach is used, but evidently it is. My question: How common is this? Have others heard of this practice?
I'm pretty sure my undergraduate institution would not make it onto any such list. So I'm sad to hear about such practices. Fortunately, I did get admitted to several very good US grad schools, so evidently the practice is not universal.