Large-scale collection of attendance area boundaries was initiated by Dr. Salvatore Saporito and a team from The College of William & Mary in the early 2000s as part of an effort to examine school-level demographic conditions. This effort integrated population data from the 2000 decennial census with administrative data from the 1999-2000 NCES Common Core of Data (CCD) to allow for demographic and economic analysis of individual school areas for the largest 100 districts in the U.S. This effort was expanded in 2008 to create the School Attendance Boundary Information System (SABINS), a data infrastructure project supported by the National Science Foundation. SABINS included grade-specific attendance boundaries from over 500 districts for the 2009-2010 academic year. More information about the SABINS project can be found at
SABINS Public School Data. In 2011 NCES coordinated with SABINS to support a collection of the 600 largest districts in the U.S. The boundaries were assembled and associated with school-level attributes from the CCD and made available for download from the
SABS website.