The effectiveness of 3 early teaching interventions (applied behavior analysis [ABA], special nursery placement, and portage) for children with autism spectrum disorder was studied in a community-based sample over 10 months. Measures of autism severity as well as intellectual, educational, and adaptive behavioral function were administered. In contrast to reports in some previous research (Lovaas, 1987), there was no evidence of recovery from autism. Children in the ABA condition made greater intellectual and educational gains than children in the portage program. They also made greater educational gains than students in the nursery program. Furthermore, the nursery program produced larger gains than the portage program in adaptive functioning. (Contains 4 tables.)