FWIW, a newly released study by UC Berkeley on SAT’s racial impact concludes race has a
stronger correlation to SAT scores than family income or education level of parents.
Link to the actual research paper. Refer especially to Figure 2 and Figure 8.
THE GROWING CORRELATION BETWEEN RACE AND SAT SCORES:NEW FINDINGS FROM CALIFORNIA
October 2015
Saul Geiser
Center for Studies in Higher Education University of California, Berkeley
http://www.cshe.berkeley.edu/sites/default/files/shared/publications/docs/ROPS.CSHE_.10.15.Geiser.RaceSAT.10.26.2015.pdf
Of those factors, moreover, race has become the strongest predictor. Rather than declining in salience, race and ethnicity are now more important than either family income or parental education in accounting for test score differences
.…test score gaps between underrepresented minority and other students have been growing. The Black-Asian, Latino-White, and Latino-Asian test score gaps have increased almost every year since 1998
.…racial segregation may amplify the effects of poverty and other kinds of social inequality on student achievement.
The paper goes on to discuss policy implications for addressing the racial scores gap.