CREDO: Charter networks maintain quality

Good charter schools start strong, concludes a new CREDO study which found no “new school” wobbles that correct over time. Schools that rank in the lowest 20 percent tend to stay bad. In the middle, there’s some progress, especially for elementary schools.

Charter networks show better performance for low-income and minority students compared to nearby district-run schools, but, overall, do about the same.

Of four “super-networks,” KIPP and Uncommon Schools had a large positive effect on students’ academic growth in reading and math, the study concludes. Students did worse in reading at Responsive Education Solutions, which specializes in dropouts from traditional schools. White Hat, which manages online schools and alternative education centers, ”had a small but significant positive impact on reading progress, but a significant negative effect in math.”