Better education leads to better scores on SAT.
Educated parents have fewer and better educated kids.
Richer people have better education.
Blacks are poorer.
Whites have better education.
The difference in education used to be much greater.
Blacks weren't allowed to study, make a career etc.
Really, given Blacks' sucky starting point, it's surprising the difference isn't more pronounced. Perhaps it's Blacks who are smarter than Whites?
Some more troll feeding: Not having to work for food makes you lazy. Why bother inventing a better plow if you already have more than enough food, if you're not even growing anything in the first place?
Most ancient civilizations emerged from the great flood plains. Oh, and they weren't White.
Most ancient civilizations have emerged from the great flood plains.