We are dedicated to building the future of learning assistance technologies, starting with the deaf and hard-of-hearing population. Sign language avatars translate digital courses, classroom instruction, etc. into age-appropriate sign language to help deaf and hard-of-hearing learners study basic literacy, arithmetic, core academic subjects, and advanced academic, vocational, and other content. We have also built an extensible accessible dataset that is open-source and can be used for specific disability inputs or to understand methods for serving users with special needs.