OpenStax College, an open textbook publisher, and OER Research Hub, an open research project, have collaborated on research examining the impact of open educational resources (OER) on learning and teaching. Surveys were conducted with educators who used OpenStax textbooks between 2013 and 2015. The majority of educators surveyed perceived increased student satisfaction using the textbooks. The report explores findings related to the impact of OER on educator practice and provides recommendations based on these findings.