Inter-District and Intra-District Segregation on Long Island, a new report published by the Long Island Index, finds that by one measure, school segregation on Long Island is double the national average; Nassau’s is almost triple. Black-white segregation is worse than Hispanic-white segregation, but Hispanic-white school segregation has been steadily increasing since the late 1980s, as the Hispanic population has grown to become the largest non-white racial/ethnic group in Long Island’s schools. Although there are some exceptions, schools in the same district aren’t that segregated; instead, entire school districts are segregated from one another.