Consider the following factors when selecting Open Education Resources to adapt or adopt:
California Open Online Library (COOL4Ed), a repository of low-cost, peer reviewed open textbooks for the top 50 college courses.
OpenOregon - Course Material Best Practices
Faculty Checklist for Evaluating Course Materials
Course Materials Adoption Best Pracitices
Student Checklist for Evaluating Course Materials
Administration Checklist for Evaluating Course Materials
From the abstract:
"The RISE (Resource Inspection, Selection, and Enhancement) Framework is a framework supporting the continuous improvement of open educational resources (OER). The framework is an automated process that identifies learning resources that should be evaluated and either eliminated or improved."