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…

The development of the Alberta Diagnostic Reading Program (ADRP) was based on a current psycholinguistic theory that describes reading as a process in which the reader uses background information to communicate with the author. To ensure its usefulness and effectiveness, the developers of the ADRP sought the advice and direct involvement of many…