This document discusses the importance of aligning instructional materials, including textbooks and open educational resources (OERs), with state learning standards to ensure student preparedness. While most states have processes for approving copyrighted textbooks, few have defined or established policies for OERs. The document recommends that state boards of education create definitions for OERs, investigate alignment of existing materials, convene experts to review materials, and work with legislatures to update policies in order to improve the selection and use of high-quality, standards-aligned instructional materials.