This report examines national, state, and metropolitan trends in the desegregation of U.S. public schools, based on federal enrollment statistics. The data indicate that the White majority is declining, and that Hispanic, Asian, American Indian enrollments are growing rapidly. There has been no overall change in Black segregation on a national level since the early 1970s, and other minority increases in urban areas have resulted in additional de facto segregation. An introduction provides a historical overview and summary. The first section discusses underlying demographic trends. The second section describes measures of desegregation. The third section surveys trends in public policy. The fourth section presents general conclusions from the analysis, including basis trends in desegregation. The fifth section reports increasing Black segregation in the South, and describes segregation trends in border states, the Northeast and Midwest, and the West. The sixth section presents Hispanic segregation trends by region, and the seventh section reports on Asian segregation. The eighth section covers trends in metropolitan areas, including overall Black segregation and data for selected Northern metropolitan areas. The ninth section reports on Hispanic segregation in metropolitan areas. It is followed by the report's conclusions. The report includes 23 statistical tables. A list of sources is appended. (AF)