Question: What case did Thurgood Marshall argue which established the unconstitutionality of separate schools for black and white students?

Context articles: Thurgood Marshall School of Law
Thurgood Marshall College Fund
Brooks School (Hillburn, New York)
National Black Law Students Association
Brown v. Board of Education
Thurgood Marshall College
Mendez v. Westminster
Thurgood Marshall
Thurgood Marshall Academy
Devil in the Grove

The Thurgood Marshall School of Law (TMSL) is an ABA-accredited law school in Houston, in the U.S. state of Texas, that awards Juris Doctor and Master of Law degrees.
 It is part of Texas Southern University.
 Thurgood Marshall School of Law is a member-school of the Thurgood Marshall College Fund and Association of American Law Schools.
The Thurgood Marshall College Fund (TMCF) is an American non-profit organization that supports and represents nearly 300,000 students attending its 47 member-schools that include public historically black colleges and universities (HBCUs), medical schools, and law schools.
 The Thurgood Marshall College Fund is named for the U.S. Supreme Court's first African-American Justice, Thurgood Marshall.
Brook School was a grammar school located in Hillburn, New York, in the Ramapo Central School District.
 .
 The school was an all-black school, which parents fought to desegregate in the early 1930s and again in 1943.
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 Thurgood Marshall was hired by the NAACP to desegregate the school.
 Thurgood Marshall won a disparity case regarding integration of the schools of Hillburn, 11 years before his landmark case of Brown v. Board of Education, on behalf of the village's African-American parents.
 Leonard M. Alexander and Peter C. Alexander, "It Takes a Village: The Integration of the Hillburn School System.
 Page Publishing, 2014 (ISBN  ).
The National Black Law Students Association (NBLSA), founded in 1968, is a nationwide organization formed to articulate and promote the needs and goals of black law students and effectuates change in the legal community.
 As the largest student run organization in the country with over 6,000 members, NBLSA includes chapters or affiliates in six different countries including The Bahamas, Nigeria, and South Africa.
 NBLSA encourages the development of talented, social conscious lawyers of tomorrow.
 NBLSA help start the Black Law Students Association of Canada (BLSAC), The National Latino/Latina Student Association (NLLSA), National Association of Law Students with Disabilities (NALSD), and The National Asian Pacific American Law Student Association (NAPALSA).
 The headquarters of NBLSA is located in Washington, D.C..
 Organized into six regions (Northeast, Mid-Atlantic, Southern, Mid-West, Rocky Mountain and Western Region) the organization has over 200 chapters and is present in all but a few of the nation's accredited law schools, as well as unaccredited law schools.
 Each year, the organization holds an annual convention to engage in legal activism and while preparing new generations of black lawyers to "effectuate change."
 Additionally, the Frederick Douglass Moot Court and Thurgood Marshall Mock Trial Competitions are held during its Annual Convention.
Brown v. Board of Education of Topeka, 347 U.S. 483 (1954) , was a landmark United States Supreme Court case in which the Court declared state laws establishing separate public schools for black and white students to be unconstitutional.
 The decision overturned the "Plessy v. Ferguson" decision of 1896, which allowed state-sponsored segregation, insofar as it applied to public education.
 Handed down on May 17, 1954, the Warren Court's unanimous (9–0) decision stated that "separate educational facilities are inherently unequal."
 As a result, "de jure" racial segregation was ruled a violation of the Equal Protection Clause of the Fourteenth Amendment of the United States Constitution.
 This ruling paved the way for integration and was a major victory of the Civil Rights Movement, and a model for many future impact litigation cases.
 However, the decision's fourteen pages did not spell out any sort of method for ending racial segregation in schools, and the Court's second decision in "Brown II", 349 U.S. 294 (1955) only ordered states to desegregate "with all deliberate speed".
Thurgood Marshall College (TMC) is one of the six undergraduate colleges at the University of California San Diego.
 The college, named after Thurgood Marshall, the first African-American Supreme Court Justice and lawyer for the landmark 1954 Supreme Court case Brown v. Board of Education, emphasizes "scholarship, social responsibility and the belief that a liberal arts education must include an understanding of [one's] role in society."
 Marshall College's general education requirements emphasize this culture of community involvement and multiculturalism; accordingly Marshall houses the minors in Public Service and Film Studies for the campus.
 Significant academic programs and departments have come out of the college over many decades: Communication, Ethnic Studies, Third World Studies, African American Studies, Urban Studies & Planning, and Education Studies.
Mendez, "et al" v. Westminster [sic] School District of Orange County, et al, 64 F.Supp.
 544 (S.D. Cal.
 1946), "aff'd", 161 F.2d 774 (9th Cir.
 1947) (en banc), was a 1947 federal court case that challenged Mexican remedial schools in Orange County, California.
 In its ruling, the United States Court of Appeals for the Ninth Circuit, in an "en banc" decision, held that the forced segregation of Mexican American students into separate "Mexican schools" was unconstitutional and unlawful, not because Mexicans were "white," as attorneys for the plaintiffs argued, but because, as US District Court Judge Paul J. McCormick ruled, "The equal protection of the laws pertaining to the public school system in California is not provided by furnishing in separate schools the same technical facilities, textbooks and courses of instruction to children of Mexican ancestry that are available to the other public school children regardless of their ancestry.
 A paramount requisite in the American system of public education is social equality.
 It must be open to all children by unified school association regardless of lineage."
 it was the first ruling in the United States in favor of school desegregation.
Thurgood Marshall (July 2, 1908January 24, 1993) was an Associate Justice of the Supreme Court of the United States, serving from October 1967 until October 1991.
 Marshall was the Court's 96th justice and its first African-American justice.
 Prior to his judicial service, he successfully argued several cases before the Supreme Court, including "Brown v. Board of Education".
Thurgood Marshall Academy is a charter school in Washington, D.C., United States., the first law-themed school in DC.
 Thurgood Marshall Academy was founded based on the principles of Justice Thurgood Marshall that every child should have a world-class education and the opportunity to reach their full potential.
 The school is located in the Congress Heights region of Washington D.C.
Devil in the Grove: Thurgood Marshall, the Groveland Boys, and the Dawn of a New America is a 2012 non-fiction book by the American author Gilbert King.
 It is a history of the attorney Thurgood Marshall's defense of four young black men in Lake County, Florida, who were accused in 1949 of raping a white woman.
 They were known as the Groveland Boys.
 Marshall led a team from the NAACP Legal Defense Fund.
 Published by Harper, the book was awarded the 2013 Pulitzer Prize for General Non-Fiction.
 The Pulitzer Committee described it as "a richly detailed chronicle of racial injustice."