What was the ruling of the Supreme Court in 1954, and what impact did it have on American history? In the landmark case of Brown v. Board of Education, the Supreme Court ruled on May 17, 1954, that segregation in public schools was unconstitutional. The case was brought by a group of African American parents who argued that their children were being denied equal educational opportunities by being forced to attend separate, inferior schools. The unanimous decision of the court overturned the doctrine of "separate but equal" established by the 1896 case Plessy v. Ferguson, which had permitted segregation in public facilities, as long as they were "equal" to those of white people. The ruling in Brown v. Board of Education had a significant impact on American history, as it paved the way for the Civil Rights Movement and the end of legal racial segregation in the United States. The decision also inspired other minority groups to challenge discrimination and demand their equal rights under the law.