CAST, Inc. is the pioneering organization that created Universal Design for Learning (UDL), transforming how schools worldwide design learning for equity and inclusion. CAST delivers innovative professional development that empowers teachers, paraprofessionals, principals, and school administrators, as well as full districts, to bring inclusive practices to life. In addition, we publish a wide range of books and resources that help educators deepen their understanding and application of Universal Design for Learning (UDL).