Before you bring OER into your classroom, you will need to ensure that you know how it will be used. You should know what your OER system will look like, as well as the impact it will have on your school and class. You will then need to determine the resources required to deploy OER to your course, your teachers, and your students. This includes technical infrastructure, key personnel, instructional materials, and software. The most pressing issue you will need to face is the quality of the resources you use.
https://www.thetechedvocate.org/designing-with-open-educational-resources-oer/