Open educational resources (OERs) are an alternative textbook to publisher materials used by colleges and universities. While OERs likely reduce the cost of college for students, research is mixed on the impact of these textbooks on student success in college. The present study utilizes preference score matching (PSM) methodology to compare OER…

Open textbooks have been developed in response to rising commercial textbook costs and copyright constraints. Numerous studies have been conducted to examine open textbooks with varied findings. The purpose of this study is to meta-analyze the findings of studies of postsecondary students comparing learning performance and course withdrawal rates…

An interactive open-source calculus textbook is compared to a popular commercial textbook. Structured as a non-inferiority study, use of the open-source textbook does not harm student outcomes, and there is evidence that the open-source textbook is better than the commercial textbook in promoting post-course enjoyment of mathematics and confidence…