. . . because NAEP has gradually included more black and Hispanic students, and black and Hispanic students score lower, on average, than white students, the total score doesn’t reflect the true gains made by each group.
. . . Each group has actually made greater gains over time than the overall total. White students increase 11 points, one more than the national average. Black students scored 23 points higher, and Hispanic students were scoring 24 points higher in 2008 than they were in 1975 despite quadrupling in size. In other words, the white-black and white-Hispanic gaps are closing and every group is scoring higher, but the national score is showing more modest improvements because of demographic changes.
He’s got charts!
The worst readers are making the most progress, as I pointed out in an earlier post.