This report shows that the segregation of Black students has increased in almost every region of the nation, and that Black students in many of nation's largest school districts have little access to or interaction with White, Asian or middle-class students. The report documents substantial Black enrollment in suburban schools, but high levels of segregation in them. Several of the nation's largest states, including California, New York and Texas, are among the nation's most segregated in terms of exposure of Black students to their White counterparts. The study details how the national student population is changing and examines the basic patterns of enrollment, segregation and integration across the U.S. The analysis includes enrollment and segregation trends for the past several decades, nationally, by region, community type, and poverty level, and showing the most and least segregated states along multiple measures.