How does the legal precedent set by the decision in the brown case relate to the concept of federalism

The 1954 Brown v. Board of Education ruling laid the foundation for the 1975 federal law (now called the Individuals with Disabilities Education Act) requiring access to a free appropriate public education for all children with disabilities. Before 1975, about one million American children with disabilities were receiving no education from the public school system. Since then, we have made progress in securing quality, integrated educational opportunities for American children with disabilities, but we still have a long way to go – particularly for children with intellectual disabilities.