Wisconsin v. Yoder, 406 U.S. 205 (1972), is the case in which the United States Supreme Court found that Amish children could not be placed under compulsory education past 8th grade. The parents' fundamental right to freedom of religion outweighed the state's interest in educating its children.
Read more about Wisconsin V. Yoder: Background of The Case, The Court's Decision, The Dissenting Opinion, Legacy of The Court's Decision