Abstract
This article explores the spatiotemporal patterns of school segregation between blacks and whites in Jefferson County and its affiliated Louisville metropolitan area. The classical dissimilarity index and the GIS-oriented spatial segregation measure – S index are used to estimate school segregation based on public school enrollment data (1987–2008). Findings call for the significance of measuring school segregation from a metropolitan-wide perspective rather than focusing on the urban school district alone. Also, results indicate that between-district segregation represents the majority of overall segregation in the entire Louisville metropolitan area. Most importantly, the GIS-based S Index enriches segregation studies by mapping the dynamic patterns of racial disparities while permitting a statistical estimate of segregation.