As Long Island's leading service provider for children and adults with Down syndrome and other developmental disabilities, ACDS provides a continuum of year-round programs and services that include diagnostic evaluations and treatment, early intervention, day care/ nursery, preschool, special education and clinical services for children, from infancy to age 5; individualized residential services (IRA) for adults, age 21 and over; and evening and weekend recreation and socialization services for children, age 5 and over. The agency also provides nursery/day care programs in an integrated setting, with typically developing children.