There was a study that asked at what grade would your parents get mad/upset. For Asians, low A. For whites, usually Bs. For blacks, Cs. Their families has lower expectations/standards.
And then there is the horrible trend of blacks beating up other blacks for “acting white”. When a kid is harassed or attacked for getting As, being on math team, speaking proper English, you have a collective pulling down the achievers. It is utter tribalism - and it enforces mediocrity.
If the black community wants to see more success, the kids who attack other kids for doing better should be whipped. Then again, they aren’t doing much about black kids attacking whites in the knockout game, either, so there’s not much hope of that right now.
I think that is the idea of Obama’s “Negro Resettlement Plan” - to send more of them to schools that aren’t simple warehouses. The larger goal, though, is just to attach them to revenue streams to PAY for public education, as the cities are flat broke.