High-quality K-12 instructional materials can meaningfully improve teaching practice and student achievement, especially when paired with professional learning support. Yet state policymakers have usually left ultimate authority for textbook selection to school district leaders. Consequently, the quality of materials across U.S. classrooms and…

The policy landscape around curriculum selection and implementation is thorny: the federal government cannot mandate any state or local curricula, state policy varies widely, and local schools and districts often lack the capacity to support and sustain detailed reviews of materials and ongoing teacher training in quality curricula. Cultural and…