It did. It was a very comprehensive study. At the time I read it, all my subscriptions to various professional journals were still active, and I'm beginning to fear it was a subscription only site. They studied over 20,000 students in small districts, large districts, urban, suburban and rural districts. They also looked at students in all grade levels. I was blown away at how many details they looked at. It seemed to me that they were trying to prove that racism did not exist and that the disparity was caused by something else, but couldn't come to that conclusion.
The light at the end of the tunnel has been turned off due to budget cuts.