Clues to the future of the rapidly changing field of special education may be glimpsed in the supposedly disparate services of early intervention and secondary/transition to adulthood. Upon examination, early intervention for infants and toddlers with special needs and their families and future-oriented services for adolescents and young adults with disabilities share striking similarities. Recognition of the congruity between structures at these two levels is essential to effective local systems planning for individuals with developmental delays and disabilities. In addition, recognition of effective practices for service provision at one level can inform and empower practitioners across the service system. At both levels the organizational structures prompted by PL 101-476, the Individuals with Disabilities Education Act (IDEA, 1990(IDEA, , 1991, and emerging definitions of recommended practices help to provide the conceptual foundation for a new model for integrated, uninterrupted services to persons with special needs at all ages. · The significant departures in organization and practice at the early intervention and secondary/transition levels challenge traditional special education systems and, as a result, require dramatic rethinking in personnel preparation. In this article we explore similarities across these two age levels, describe differences in services at each level, recommend actions to improve the coordination of developmentally appropriate services across the life span for individuals with disabilities and their families, and address the implications of these issues for providers of personnel development and services to consumers.The commonality of approaches to persons with special needs in infancy and adolescence is rooted in the organizational structures defined by federal law. Through interagency collaboration, these organizational structures are designed to be: (a) horizontally administered, (b) consumer-driven, and (c) community-referenced. At both levels effective services are likely to be articulated through local coordinating councils and by personnel carrying out the service coordination functions mandated by federal and state policies, and at both levels the potential exists for full-scale service integration.Jeannie Kleinhammer-Tramill is an associate scientist with the University Affiliated Program,