Some research has found that students in courses that implemented OER had better grades and lower failure and withdrawal rates than their counterparts in courses that did not use OER. Results indicate that OER adoption does much more than simply save students money and address student debt concerns. OER improve end-of-course grades and decrease DFW (D, F, and Withdrawal letter grades) rates for all students.
Source: Colvard, Nicholas B., C. Edward Watson, and Hyojin Park. "The Impact of Open Educational Resources on Various Student Success Metrics." International Journal of Teaching and Learning in Higher Education 30, no. 2 (2018): 262-276.
Materials can be accessed anywhere at any time.
Customization gives faculty control over the quality of their course materials, as well as the type and timing of updates to textbooks and other resources.
Unlike textbooks and other static sources of information, OERs can be improved quickly through direct editing by users or through solicitation and incorporation of user feedback. Instructors can take an existing OER, adapt it for a class, and make the modified OER available for others to use.