Hernstein and Murray argued in "The Bell Curve," that blacks have average IQs of just 85, versus whites 100, Asians 105 etc.
Many blacks have been given entry to "higher education," more on Affirmative Action, than by pure merit.
They have also probably been graduated on Affirmative Action. The males drop out, then go to prison, and the females go to various government jobs, and give birth out of wedlock to "future inmates of America."
A subset of American life that is dysfunctional. This cycle continues. You can't make chicken salad, out of chicken sh!te. 85 is still 85.