Decades ago a local popular public magnet high school near me had a lottery system like that. Students would apply for the school and M of N applicants would b

Decades ago a local popular public magnet high school near me had a lottery system like that. Students would apply for the school and M of N applicants would be picked randomly. It turns out the administrators running the lottery would run the randomization program until it gave them the student distribution they wanted (read: the best and brightest, and since it's the south... somehow whiter than expected).