School districts are in the process of adopting the Response to Intervention (RTI) approach to identify and remediate academic and behavioral deficits. As an integral member of the school behavior team, school counselors must use data on individual interventions to contribute to the data-based decision making process in RTI. This article presents a method and rationale to use behavioral observations to determine the efficacy of focused responsive services. It includes implications for school counseling practice. (Contains 3 figures.)