Becoming Less Separate?: School Desegregation, Justice Department, and the Pursuit of Unitary Status (PDF; 2.6 MB)
Source: U.S. Commission on Civil Rights
From press release (PDF; 66 KB):

The purpose of this ambitious report is to examine whether levels of integration tend to erode as court desegregation orders are lifted. The Commission finds that the increase in the number of jurisdictions obtaining unitary status has not worsened integration levels. In other words, the lifting of these orders has not led to increased “resegregation” in the seven states that the Commission examined: Alabama, Georgia, Florida, Louisiana, Mississippi, North Carolina, and South Carolina.

Moreover, the evidence indicates that the substantial number of districts that have obtained unitary status since 2000, at least partly through the actions of the Educational Opportunities Section of the Department of Justice, exhibit higher levels of integration than those districts that obtained such status in prior decades.