Most of them are not paying for their educations
They cannot compete on a level playing field with their fellow students
So of course they are stressed and blame racism
They also tend yo gravitate towards politicized areas of study such as black studies where they can get good grades for minimal work simply by agreeing with the professors left wing grievance world view
You’re right; when I was in school years ago I had few blacks in my classes after freshman year. Most were woefully behind everyone else (including foreigners), and they had that deer-in-the-headlights look - they had no idea what either the professors or students were talking about. I genuinely pitied them; they had been deceived, and it all came crashing down when they were no longer in “safe” (read: 100% black, including teachers) environments. I suspect most either dropped out or went to “play college” (black studies and such); by senior year there were practically none (though there were African blacks) - and this was in a NJ city with plenty of blacks.
My school even had almost a whole building for remedial classes - high school level classes for preferred minorities without which white & Asian male students weren’t even admitted to the school. It looked like the nearby public high school...