The document presents a summary of recent studies on the adoption of Open Educational Resources (OER), highlighting 21 peer-reviewed studies that involve 167,883 students and show that 95% of outcomes are the same or better. Additionally, it reviews 20 peer-reviewed studies on perceptions of OER quality, encompassing 16,140 professors and students, with 55% perceiving it as better, 35% as same, and 10% as worse. Overall, the findings indicate a positive perception and efficacy of OER in educational settings.