As teachers, administrators, and members of intervention teams use student performance data to inform instructional decisions and monitor implementation of tiered instruction in a Response to Intervention (RTI) model, assuring fidelity of implementation or treatment integrity continues to be a challenge. This article describes how one school district established a model of RTI including three mechanisms to enhance data-driven instruction and fidelity of implementation through the use of: (1) a student intervention tracking form, (2) reading coaches, and (3) teacher-made video clips. (Contains 1 table and 2 figures.)