The research and evaluation of ATD’s OER Degree Initiative provided encouraging evidence regarding the academic outcomes of students who enrolled in multiple OER courses, the economic impacts for both students and institutions, and the experiences of key stakeholders. Students benefitted from unrestricted access to course content and improved course experiences, in addition to saving money that could be used towards other educational or personal expenses.
https://www.achievingthedream.org/resource/17993/oer-at-scale-the-academic-and-economic-outcomes-of-achieving-the-dream-s-oer-degree-initiative