This document presents the business and policy case for open educational resources (OER). It discusses the growing global demand for higher education and rising student debt levels, as well as how digital technologies allow for near-zero marginal costs of copying and distributing educational content. OER such as open textbooks, courseware, and other materials are presented as a way to increase access and affordability for students. The document outlines several open policy proposals, such as requiring openly licensed materials from publicly funded education projects. It argues that when the cost of sharing educational resources is near zero, educators and governments have an ethical obligation to share such resources openly to maximize social impact and return on investment.