Eighty-six school districts have seen their student populations grow by 25 percent since 1991.
The report, which studied 33 charter management organizations in six states, found that two-thirds were cause for concern.
The District has partnered with the group to put 10 community ambassadors in six North Philadelphia elementary schools.
After a summer of fierce debate with pro-charter advocates, the NAACP ratifies a resolution on a moratorium.
The results, from 2015-16, do show some progress for high-schoolers.
Kelly Services was named in May by the School Reform Commission.