Thurgood Marshall’s litigation of Brown v. Board of Education in 1952—the landmark case, decided in 1954, that made segregation illegal in United States public schools—was not his first case before the U.S. Supreme Court. Some legal scholars claim that the cases he presented to the court in the sixteen years before his foundations of discrimination against African Americans that paved the way for success in Brown.
When Marshall joined the legal staff of the National Association for the Advancement of Colored People (NAACP) in 1936, the organization was divided on how to proceed against the legal doctrine that for forty years had promoted “separate but equal” facilities for African Americans in educational institutions, in public transportation, and various real equality and thus to prepare the courts to recognize the validity of the theoretical argument.
While Marshall enjoyed several successes arguing for the equalization of facilities and opportunities in such areas as voting practices and accommodations for graduate students at public universities, it would be twelve years before he evolved a strategy for arguing against pervasive discriminatory practices that enabled him to make the leap from individual to accept such data as convincing evidence for finding “separate but equal” insupportable on its face.
What this question is testing
Anticipate
This is a Non-Author Opinion question — what would the scholars referred to in the passage believe? The scholars' view is right there in P3: Shelley "prepared the court to accept" the kind of data Marshall used in Brown. So the scholars are saying Shelley was a necessary stepping stone to Brown.
If Shelley hadn't happened, the court wouldn't have been ready to accept that data in Brown, and the ruling probably would have gone the other way.
Goal
Look for an answer that ties not having Shelley to losing Brown. Common traps:
Answers that say the court would have decided differently without Shelley — overturning on other grounds, or using political reasoning
Answers about the court "never" using sociological data again — too sweeping
Answers that confuse the housing-discrimination doctrine of P3 with the broader claim about Brown
Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.