Answer :
The school was racially segregated, which led to a lower quality of education to some students.
The correct answer is: "Racially-segregated schools actually deprived black students. He argued against the belief that such schools were providing same-quality education in separated facilities".
Brown v. Board of Education was a case dicussed by the US Supreme Court, which led to the enactment of a landmark decision in 1954.
The case was about the constitutionality of the "separate but equal" principle that was accepted in a former decision enacted by the US Supreme Court in 1896 in the Plessy v. Ferguson case. Such decision allowed the proliferation of segregated schools under the belief that, if facilities were equal in quality, such education system was not violating the equality of rights provision that had been guaranteed for all US citizens by the Reconstruction Amendments to the US Constitution.
Brown v. Board of Education overturned the abovementioned previous Supreme Court decision and declared segregation unconstitutional, claming that, in practice, it actually deprived black students. The court published a deadline and all public schools nationwide had to abolish such practice and to adopt racial integration.