I’d be interested to see these numbers adjusted for household income.
But there is a major flaw in the thesis that income differences explain the racial gap. Consider these three observable facts from The College Board's 2005 data on the SAT:This phenomenon was also noted in "The Bell Curve".• Whites from families with incomes of less than $10,000 had a mean SAT score of 993. This is 129 points higher than the national mean for all blacks.
• Whites from families with incomes below $10,000 had a mean SAT test score that was 61 points higher than blacks whose families had incomes of between $80,000 and $100,000.
• Blacks from families with incomes of more than $100,000 had a mean SAT score that was 85 points below the mean score for whites from all income levels, 139 points below the mean score of whites from families at the same income level, and 10 points below the average score of white students from families whose income was less than $10,000.