OpenSciEd was launched to improve the supply of and address demand for high-quality, open-source, full-course science instructional materials, while at the same time supporting the implementation of middle school science instructional units. The goals of OpenSciEd are to ensure any science teacher, anywhere, can access and download freely available, high quality, locally adaptable full-course materials. OpenSciEd aims to create a set of exemplary science instructional materials that are: designed and aligned to the Framework and NGSS; based on research regarding how students learn, what motivates learning, and the implications for teaching; developed with educators and extensively tested by teachers and schools; designed to be used with low-cost, standard laboratory equipment and materials amenable to large-scale deployment; and improved over time based on feedback from teachers and field-testing. While starting at the middle school level, the goal is to create an entire science curriculum from elementary to high school.