Special education has been the subject of many rulings in federal courts. These rulings have greatly affected the practice of special education. The most important of these cases have come from the U.S. Supreme Court, which thus far has heard 12 cases directly affecting special education. This article examines the most important of these special education rulings from the High Court and addresses the meaning of these decisions for special education administrators, teachers, related service providers, students in special education, and their parents.