What US Supreme Court ruling made racial segregation in public schools illegal?

A simple majority vote of the justices who reviewed the case. Ideally, all nine justices would consider every case, but circumstances sometimes interfere with that.

1978

The US Supreme Court doesn't ban all prayer in schools; it only bans organized prayer in public schools. Individuals are free to pray privately, but not to impose their religious beliefs or the...

The Warren Court ruled segregated schools were unconstitutional in Brown v Board of Education, (1954), and ordered integration to take place "at all deliberate speed" in Brown v Board of Education...

Brown v. Board of Education, (1954) reversed the "separate but equal" doctrine established in Plessy v. Ferguson, (1896), when the Supreme Court declared segregation in public schools...