Over the past five years, education leaders and researchers have finally begun to focus on the need for quality, standards-aligned curricula. Now the question is: Where will these curricula come from? Will schools continue to rely on traditional publishers, buying whatever is available in the curriculum marketplace, or is there another way? This blog series spotlights a growing trend: states and districts are turning to open educational resources, or OER, for curriculum in core subject areas. This post explores the role states have played in driving innovation and improved quality in the curriculum marketplace. Check out the first post, which highlights several new reports on state curriculum reform efforts and the role of OER, and the second post which discusses ‘open pedagogy’ and the connection between curriculum and teacher professional development.