A recent Florida Virtual Campus report underscores these possible benefits by reporting via survey data the negative impacts of on students when the use of commercially published textbooks is the only choice available to students. This report said,
If want to know more, and there's a few tutorials available for faculty who want to know more about OER:
**Grewe, K. E., & Davis, W. P. (2017). The Impact of Enrollment in an OER Course on Student Learning Outcomes. International Review Of Research In Open And Distributed Learning, 18(4), 231-238.