This article consists of a review of 16 research studies on treatments in school settings for children with attention deficit hyperactivity disorder (ADHD) carried out in the last decade. It includes both simple interventions and multicomponent interventions where different techniques are combined. Based on this revision, the conclusion is drawn that, based on the evidence, school-based treatments for ADHD are effective in the short run for reducing disruptive behaviors and improving on-task behavior and academic performance of children with ADHD. Issues regarding the limitations to generalizing the improvements over time and across content areas are discussed. Furthermore, results from the Multimodal Treatment Study of Children with ADHD (MTA)--a study designed to compare the efficacy of behavioral treatment (BT), medical management (MM), combined treatment (BT and MM), and a routine community care control group--are discussed. The MTA findings suggest that the most effective treatment for ADHD is a multimodal intervention that frequently includes concurrent medication in addition to parent training, school interventions, and child intervention.