In this report to the House of Representatives Committee on Government Reform, the Government Accountability Office (GAO) describes the trend in the number of children diagnosed with autism served under the Individuals With Disabilities Education Act, the services provided to these children, the estimated per pupil expenditures for educating children with autism, and approaches to their education. GAO provided a draft of this briefing to officials at the Department of Education for their technical review and incorporated their comments in this final report where appropriate.