The document summarizes research findings from the OER Research Hub about open educational resources (OER). It finds that OER can improve student performance and satisfaction, help at-risk learners complete their studies, and bring financial benefits to students and institutions by lowering costs. Educators reported using OER leads them to reflect more on their teaching practices and adapt materials to better meet learner needs. Informal learners often use OER to try out university-level content before enrolling in formal courses or to learn at no cost. The research was based on surveys, interviews, and focus groups with over 7,000 respondents from around the world.