First Step to Success is a multicomponent behavioral program for at-risk children who show signs of antisocial behavior at the point of school entry. The program incorporates behavioral intervention techniques, including praise and feedback, positive reinforcement, social skills training, teacher and parent collaboration, and time-out/response…

Successful implementation of evidence-based educational practices at scale is of great importance but has presented significant challenges. In this article, the authors address the following questions: How does the level of on-site technical assistance affect student outcomes? Do teachers' fidelity of treatment implementation and their perceptions…