1991 By the 1990-1991 school year, three-fourths of the white population lives in suburban and rural areas; blacks and Latinos reside largely in urban areas. Although whites comprise 70.7% of student enrollment nationwide, only 25% of students enrolled in the nation's largest forty-seven urban districts are white; blacks comprise 42.1% of the enrollment, and Latinos comprise 26.5%. Over 50% of students in the country's large urban districts are eligible for a free or reduced lunch‹the primary measure of student poverty. Sixty-six percent of black students are now enrolled in public schools with a more than 50% minority population. National data demonstrate that schools with a majority of minority children are dominated by poor children, but that 96% of white schools are populated by a middle-class majority.