CURRICULUM REFORM  Curriculum Reform in the Nation’s Largest School Districts Center for American Progress, August 2018 A troubling number of U.S. school districts are failing to use highly rated instructional materials, according to this report. Researchers identified math and English language arts materials used by the nation’s 30 largest districts, then examined how those materials stacked up on two well-regarded rating systems. Of the 25 districts that responded to a survey, 10 were not using any highly rated materials. Even more concerning, 23 of the 25 were using or recommending materials with low ratings. Moreover, only 18 of the 30 districts made available on their websites information about their instructional materials, limiting the ability of parents and policymakers to be informed and to advocate for