The most probable reason is income inequality + public education system mostly paid by local real estate taxes. This creates the chicken & egg problem where poor neighborhood causes bad education which causes poverty.

Education has insignificant effect on IQ, so this can't be true.

Actually education does have a significant effect on IQ. http://www.pnas.org/content/pnas/109/2/425.full.pdf

Yes, you can attain statistical significance with large sample (N > 100,000). No, it's still insignifcant, because effect size is so small. Did you read the article? The effect is less than 1 point of IQ, whereas black-white IQ gap is usually quoted as 15 points.

Hmm? They find that one additional year of schooling increases IQ by 3.7 points. I'd say taking that figure with the difference in schools that blacks and whites in the US usually attend and you've got a plausible answer that the IQ gap is created through environmental differences.

I think the PISA tests disprove your hypothesis.

> Black-white education gap is trivially explained by black-white IQ gap. [...] The most probable reason is genetics.

Even if that were true for one gender (and it's not), it wouldn't be true for the other unless there is also a recent and accelerating, genetically-determined, IQ gap between black men and black women.

Nasty nonsense. Flies in the face of both evidence and reason.

>The most probable reason is genetics.

This isn't true.