 In 1936, Marshall became part of the national staff of the NAACP.In "Murray v. Pearson", Marshall represented Donald Gaines Murray, a black Amherst College graduate with excellent credentials, who was denied admission to the University of Maryland Law School because of its segregation policy.Black students in Maryland wanting to study law had to attend segregated establishments, Morgan College, the Princess Anne Academy, or out-of-state black institutions.