This section of the Website contains Part B and Part C data reported annually by states to the Office of Special Education (OSEP), including state-by-state, rank-ordered, and historic trend data.
Public Law 111-256, enacted on October 5, 2010, amended IDEA and other federal laws to replace the term "mental retardation" with the term "intellectual disabilities." The definition of this disability category did not change. For data referencing school year 2011-12, the new term is used on data collection forms, EDFacts file specifications, data files, and data tables. The U.S. Department of Education uses the term "intellectual disabilities" beginning in the 30th Annual Report to Congress on the Implementation of IDEA.
All documents and data on this site are the most current available. Send any questions or comments about this site to the webmaster.