(COMMON DREAMS) Paul Buchheit — In early 2015 Stanford University’s updated CREDO Report concluded that “urban charter schools in the aggregate provide significantly higher levels of annual growth in both math and reading compared to their TPS peers.”
This single claim of success has a lot of people believing that charter schools really work. But there are good reasons to be skeptical. First of all, CREDO is funded and managed by reform advocates. It’s part of the Hoover Institution, aconservative and pro-business think tank funded in part by the Walton Foundation, and in partnership with Pearson, a leading developer of standardized testing materials. CREDO director Margaret Raymond is pro-charter and a free-market advocate.
The 2015 CREDO study received much of its input, according to a Louisiana source, from the New Orleans Recovery School District and charter promoter New Schools for New Orleans, who together had “embarked on a bold, five-year journey to standardize, validate and export the New Orleans charter restart model…addressing the problem of failing schools by restarting them with schools operated by charter operators.”
Regarding national findings, a review of the CREDO study by the National Education Policy Center questioned CREDO’s statistical methods: for example, the study excluded public schools that do NOT send students to charters, thus “introducing a bias against the best urban public schools.”