We discuss the problem of autism-specific special education programs representing themselves as Applied Behavior Analysis (ABA) programs when the only ABA intervention employed is Discrete Trial Teaching (DTT), and often for limited portions of the school day. Although DTT has many advantages to recommend its use, it is not well suited to teach the full range of cognitive, social, academic, leisure, and functional living skills children with autism and related disorders need to develop and generalize to varied natural environments. DTT also does not address the treatment of behaviors that can interfere with instruction and the acquisition, generalization, and maintenance of skills many children with autism bring to instructional situations. We describe a comprehensive program of ABA services for children with autism and briefly discuss the various interventions and their applications and combinations to achieve broad improvement in many different skill areas. In our view, "true" ABA programs are comprised of multiple assessment and intervention methods used individually and dynamically to achieve the best results. © 2007 Wiley Periodicals, Inc.Over the past decade, there has been a marked increase in the number of students identified with autism in the United States. For example, in the state of Maine, special education identification of students with autism has increased steadily from 158 in 1995 to 1,255 in 2004, representing a nearly 800% increase over the past decade (Maine Department of Education, 2005). By comparison, the school-age population in Maine has decreased by approximately 6% during the same time period. Paralleling the increased numbers of students has been the growth of autism-specific special education programs, many of which utilize applied behavior analysis (ABA) methodologies. Although comprehensive ABA-based special education programs were a rarity only a few years ago, scores of programs and practitioners claiming to offer ABA methodologies have recently emerged. Observations of many of these programs by the authors indicate one consistent finding; namely, there is considerable variation in the types of assessments and interventions used among school-based programs that purport to be an "ABA program." Many of these school-based ABA programs appear to be limited in scope, and relatively few programs appear to offer a full array of methodologies shown to be effective with students with autism and related developmental disorders.A recent observation by the first author of a third grader with autism is illustrative of this narrow application of ABA methodologies. The student was placed in a self-contained special education classroom comprised of six students with autism, one special education teacher, and four educational technicians. The special education program was described as an "ABA classroom." Posted on the wall of the classroom was a daily schedule that listed in chronological order the tasks and activities that students would participate in throughout the school day. What was striking...