https://outline.com/KeK9jt
Harvard professor:

"When I moved from Oxford to Harvard, I was puzzled. My reading of mid-term exam papers suggested that a substantial proportion of my new students wouldn’t have got an interview at Oxford, never mind a place. It was explained to me that a substantial chunk of undergraduates were “legacies” – there because their parents were alumni, especially generous alumni – and another chunk were the beneficiaries of affirmative action or athletics programs. The admissions system was managed by professional administrators, not professors.

I soon learned how to deter the academically weaker brethren. By assigning a lot of reading and awarding some C grades, I was soon rid of them...."