http://www.nytimes.com/2009/04/29/education/29scores.html?hpw
The achievement gap between white and minority students has not narrowed in recent years, despite the focus of the No Child Left Behind law on improving the scores of blacks and Hispanics, according to results of a federal test considered to be the nation’s best measure of long-term trends in math and reading proficiency.
Isn't it obvious? A racial gap is real. Read The Bell Curve. Deal with reality.
The 2008 score gap between black and white 17-year-olds, 29 points in reading and 26 points in math, could be envisioned as the rough equivalent of between two and three school years’ worth of learning, said Peggy Carr, an associate commissioner for assessment at the Department of Education.