One successful approach for proactively reducing problem behavior is the use of a multitiered system of supports (MTSS). MTSS is usually comprised of three tiers, with an increasing intensity of support at each tier to meet student needs. Tier 1 includes preventive strategies staff implement with all students. Typically, Tier 2 behavioral interventions are intended for students with frequent distracting or disruptive behavior problems. Interventions for Tier 2 are typically provided in small-group format and are standardized so they require minimal time and resources on the part of the classroom teacher. However, students who do not respond sufficiently to Tiers 1 and 2 require Tier 3 supports, which are intensive and individualized interventions. Researchers and practitioners have begun to consider whether Tier 2 interventions can be modified to increase their effectiveness. In this article, the authors describe how to adapt social skills instruction (SSI), a common Tier 2 intervention, to increase its effectiveness.