Yet another graph, this one showing how this year’s group of African-American 8th grade students did on the NAEP math tests in the regular DC public schools, in all DC publicly-funded schools, in the DC charter schools, in large cities across the nation, and in all US public school systems, going back to the early 1990s.
As usual, I had to do a bit of algebra to calculate what the average charter school scores were in the post-Rhee era, since those are not explicitly given anywhere. I give the explanation in my previous two posts.
My previous results seem to disagree a bit with those produced by NCES (by a couple of points). Therefore I used their data instead of what I calculated; the graph above is new as of 1/6/2014.
I still make these conclusions:
(1) Since the establishment of mayoral control of the schools, as a whole, the overall average for DC students in publicly-supported schools is following just about the exact same trends that were established from 2000 through 2007. As a result, math scores for DC’s African-American 8th graders are now equal to those in large cities across the nation, which is a positive development.
(2) The DC charter schools seemed to have siphoned off the more motivated black 8th grade students and their families; as a result, scores for students in the regular DC public schools at that level in math lag significantly behind those of their counterparts in the charter schools, whose scores now surpass those of black 8th graders n the nation’s public schools as a whole and also those in large urban school systems as well.
As usual, if anybody finds any errors in my work, please let me know by leaving a comment.