As states and districts transition to college- and career-ready standards and aligned assessments, the need for high-quality instructional materials is clear. Open Educational Resources (OER) offer a low-cost solution with high potential to assist teachers nationwide in helping students meet the demands of higher standards. More and more developers are choosing to publish their instructional materials as OER as an alternative to publishing with a traditional, all rights reserved copyright. In addition to this advantage, OER support the ability of educators to share and modify instructional materials for classroom use. With the advent of common, college- and career-ready standards in the Common Core State Standards (CCSS), educators can seek out, customize or develop high-quality instructional materials and can share those materials with their peers across districts and state borders. The modern classroom incorporates modular instructional materials from myriad sources, and therefore instructional materials and the policies and practices related to those materials should support this new model. The model of one textbook per student in each subject is out of sync with a world where content is available digitally, through an array of methods, to meet the needs of students and teachers in 21st-century classrooms. However, as with the rest of the marketplace, the demand for materials has led to a flood of new OER instructional materials. The large number of materials presents a daily challenge for educators who are trying to determine the quality and alignment of the materials. It also underscores the importance of policy leaders with shared standards having a shared understanding of what constitutes quality and standards alignment for OER instructional materials, across districts and across states. This brief sets forth state policy recommendations for providing educator access to college and career-ready OER. Two appendixes include: (1) "The Case for OER--A Guide for Policymakers"; and (2) Related Resources.