Head start programs and busing are cases in point. Liberals insisted that by dumping more money into various social programs and by moving inner city black kids into schools with middle class white kids, their academic performance would improve. It didn't. All it did was spend a lot of money and resources that could be better spent elsewhere, all the while creating problems for those kids who were actually learning.
True; it dropped like a rock - for BOTH races!
So; did the GENETICS suddenly change for these kids; or did something else?
Did the CULTURE change for these kids - or something else?