b. Oliver Brown sued the Board of Education of Topeka, arguing that segregation was unconstitutional, and did not provide equal opportunity.
c. The Supreme Court ruled that segregation in schools is unconstitutional, and that the practice of it must end. It overturned Plessy vs. Ferguson and ruled that de jure racial segregation violated the 14th amendment.
d. The orginial decision did not explicitly spell out an end to segregation in schools, however, the second decision in 1955 did. Because of Brown II, students cannot be denied education based on the color of their skin, they can also not be segregated.