The document is a presentation on the history of special education given by Brent Daigle, Ph.D. It covers major events and legislation in the evolution of special education services in the United States such as Brown v. Board of Education, which required desegregation of schools. It also discusses key concepts including the six principles of IDEA, the 13 special education categories, educational labels, and the continuum of special education services. The presentation provides an overview of the important developments that have shaped special education.