This website provides public access to data about children and youth with disabilities served under the Individuals with Disabilities Education Act (IDEA) - Part B and C; technical assistance (TA) materials to support the collection, analysis and reporting of IDEAdata; and the forms and spreadsheets used for collection. DAC was funded in October 2007 by the Office of Special Education Programs (OSEP), U.S. Department of Education to provide information and TA to improve the quality of all state-reported data required by the IDEA. Westat and its subcontractor, Louisiana State University Health Sciences Center–Human Development Center, operate DAC as a 5-year cooperative agreement with