Determining the Accessibility of K-12 Digital Materials: Tools for Educators.

. The rapid growth in K–12 online learning has resulted in the need for developing learning materials that are appropriate for—and accessible to—all learners, including students with disabilities. Because the development of online learning materials requires an investment of time and resources that are often outside the capabilities of school districts and individual teachers, materials used in the K–12 online classroom are typically developed by external, for-profit vendors.