What proactive measure was successful at to integrate school districts after segregation was deemed unconstitutional?

The Supreme Court ruled that school segregation was unconstitutional in the Brown v. Case. Board of Education, in 1954. With this new law, the law arising from the case of 1896 Plessy v. Ferguson, where the court approved segregation if equal conditions were given to whites and blacks. For what was constitutional segregation, under the slogan "separate, but equal", although in a few cases the segregated schools were really the same (especially public) where resources and education for black schools was very poor. Supreme Court Chief Justice Earl Warren made it clear that in public education, the idea of '' separate but equal '' could not exist.