Fifty years after the "Brown v. Board of Education" decision outlawed de jure segregation in American schools, many school districts remain segregated. Despite numerous efforts aimed at desegregation, residential segregation--the primary barrier to significant school desegregation--remains entrenched throughout the United States. The Miami-Dade County Public Schools, the nation's fourth largest school system, provides an excellent example of a segregated metropolitan region that produced a segregated school system and defied numerous efforts at significant school desegregation.