[Note: refer to SES and the gap: It’s worse than that for new and better looking graphs.]
[Note: the number found in the JBHE don’t add up, but the trend across SES is correct; I’ll try to find better data when I get a chance]
In The Likelihood of Genetic Group Differences in IQ: The Black White Gap in IQ, Liberal Biorealist posted the classic 1995 group SAT differences across SES graph. Richard Spencer recently used that rather dated graph in his Costs of Diversity presentation. I decided to make a more up to date version. By eyeballing the original, you can see that the difference across SES is approximatly the same as it was in 95′ (1).
Data Source: Why Family Income Differences Don’t Explain the Racial Gap in SAT Scores. In: The Journal of Blacks in Higher Education; Winter 2008/2009; 62; Ethnic NewsWatch (ENW), pg. 10. According to College Board, the 2008 pooled SD = ~100.
What’s interesting is the % of College bound students. Constant from 1998, African Americans make up 12% of the college bound population, while the white (European + Middle Eastern + Jewish + North African) population made of 60%, down from 67%. This suggests an across the board discrimination against European Americans as a result of discrimination for African Americans (and Hispanics), similar to what Espenshade and Radford found for private colleges. This just shows that if you’re not going to fight for your piece of the your pie, someone else will take it.
(1) As noted in the JBHE:
In 1976 The College Board published an analysis of the racial differences in scores on what was then called the Scholastic Aptitude Test. At that time the average black score was about 240 points, or 20 percent, below the average white score. By the early 1980s, the gap had shrunk to 200 points. Black scores were then 17 percent lower than the scores of whites. By 1988 the black-white SAT test scoring gap was down to 189 points [I am calculating 198 (.87 SD)– not sure why]. The trend was distinctly encouraging. Many specialists in the educational community predicted that in time the racial scoring gap between blacks and whites would disappear altogether.
But after 1988, progress in closing the SAT gap stopped abruptly and later it began to open up. In both 2006 and 2007 the racial gap in SAT scores actually declined by a slight, almost insignificant margin. But this year the news is very discouraging. The 189-point racial scoring gap that prevailed in 1988 has now grown to 209 points. This is the largest racial scoring gap in 20 years. On a percentage basis the scoring gap has grown from 15.7 percent to 17.4 percent. These are the most unfortunate and persisting statistics that best tell the story of how deep the academic achievement gulf is between African Americans and the rest of the American population. Source: The Racial Scoring Gap on the SAT College Admission Test Is Now Wider Than It Has Been in 20 Years Anonymous. The Journal of Blacks in Higher Education. New York: Autumn 2008. , Iss. 61; pg. 74.