IQ is only part of the issue; the fact is many urban students have never received a real education in either elementary school or high school. When I was in a state school years ago, they set aside a building for these ethnic “fake students” to attend “remedial classes”; these were the requirements white students wouldn’t even be attending the college without passing in high school; they had hordes of “preferred minorities” that were in those classes for years without earning any college credits. It was “High School Do-Over For Blacks & Hispanics” - nothing more.
Another trend I noticed as graduation neared was the separation of classes into “majors” and “non-majors” - so classes like economics could be dumbed down for fake students.
There is a lot of dumbing down to accommodate those who would suffer under meritocracy. Affirmative-action comes to mind. What a pathetic joke on those affected.