The Open Educational Group conducts empirical research on the impact of OER adoption. Consult their Review Project page for a summary of all known empirical research on the impact of OER adoption.
Consider the following factors when selecting Open Education Resources to adapt or adopt:
These resources on accessibility may be helpful when considering adopting or adapting OER for your courses.
In addition to keeping the 5Rs (Retain. Reuse. Revise. Remix. Redistribute) in mind when adopting, adapting or building OER resources and courses, using rubrics or other evaluative tools to measure effectiveness, accessibility and alignment to student learning outcomes are key. Linked below are several examples of rubrics. Some of the example rubrics are designed to evaluate overall OER courses and not individual OER course materials.