The Accessibility Capstone at the Paul G. Allen school focuses on the use of participatory design methods to address the needs of highly diverse populations. Students face the unique challenge of creating novel, practical technology solutions to address the needs of community members with disabilities who are the course Needs Experts. Needs Experts provide essential knowledge of the problem domain space and co-design with the groups throughout the 10-week project cycle. The course is designed to provide student teams the theory, structure and support allowing teams to work effectively within the community, while learning fundamental principles of disability theory, participatory design and iterative engineering. A subset of the projects are sustained for real world use by the Taskar Center for Accessible Technology. See our Accessibility Capstone Video.