The ruling in Brown v. Board of Education did not immediately end segregation in public schools because

Brown v. Board of Education ruled that racial segregation in public schools was unconstitutional, but the Court did not initially set a detailed timetable or enforcement plan for desegregation. Its follow-up ruling called for desegregation to proceed “with all deliberate speed,” leaving implementation largely to local authorities. Therefore, the best choice is that the Supreme Court did not offer a new policy.

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