At the national level, a 24-member national board of directors and a delegate body of representatives from each chapter guide The Arc's work. National headquarters staff located in Silver Spring, Maryland, Bedford, Texas and Washington, DC carry out their decisions and directives.

Why does The Arc exist?

The Arc works to ensure that the estimated 7.2 million Americans with mental retardation and related developmental disabilities have the services and supports they need to grow, develop and live in communities across the nation. These services include early intervention, health care, a free appropriate public education and supports for their families.

For adults, services and supports may include preparation for employment, help in finding a job, independent living skill training, leisure and recreation activities and any other supports they need.

The Arc also exists because people with mental retardation need help to ensure that their rights as citizens of this country are protected, and they are supported to live as they choose.