The availability of high-quality Open Educational Resources (OER) plays an important role in addressing equity issues in education. For its full potential to be realized for every learner, however, OER must be more than openly licensed at a reasonable cost. They must also be usable across the variability that learners bring to any learning environment. The purpose of the Protocol for Curating Accessible OER is to provide detailed yet easily implemented techniques for evaluating the accessibility of OER in a variety of formats, including Microsoft Word, Google Workspace and PDF documents, websites and instructional videos.