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…

After the authors reviewed the "State of State Standards--and the Common Core--in 2010" they found that the Common Core State Standards (CCSS) were clearer and more rigorous than the English language arts (ELA) standards in 37 states and stronger than the math standards in 39 states. States were encouraged to adopt the CCSS. By 2013 the…

Much research has noted the misalignment between kindergarten through 12th grade (K-12) academic standards and curriculum materials used in classrooms. Many states and education organizations have been pushing for greater use of standards-aligned curriculum, especially during the past several years. In this report, the authors share results…

If a "curriculum" -- a set of instructional materials intended as a comprehensive course of study for a particular subject and grade level -- is well-aligned with state standards, it can help teachers deliver instruction that leads to students' mastery of those standards. However, most research suggests that curricula, in themselves, are…

This technical report provides information about the sample, survey instrument, and resultant data for the American Instructional Resources Surveys (AIRS) that were administered to principals and teachers in spring 2019 via RAND's American Educator Panels. The AIRS focused on instructional resources used and supported in English language arts,…

Research by Achieve, ACT, and others suggests that for high school graduates to be prepared for success in a wide range of postsecondary settings, they need to take four years of challenging mathematics--covering Advanced Algebra; Geometry; and data, probability, and statistics content--and four years of rigorous English aligned with college- and…

The Common Core State (or other rigorous) Standards (CCSS) being implemented by states across the nation are prompting school leaders and teachers to seek ways to move the standards into classroom instruction, assignments and assessments. Schools wanting to ensure that student work meets grade-level standards are using differentiated instructional…