Which Supreme Court ruling caused schools to start integrating in the 1950s? A. Plessy v. Ferguson B. Brown v. Board of Education C. Dred Scott v. Sandford D. Gideon v. Wainwright

B is the correct answer. Desegregation, or school integration, began in 1954 with the ruling Brown vs Board of Education. Brown was represented by the National Association for the Advancement of Coloured People, who argued that segregated schools were unequal.