'The authors present a clear foundation, rationale, and framework to implement an RTI model. In an age of standards-based accountability, school personnel must have access to models and methods for data-based decision making. This text effectively communicates how to collect and use data to better understand the relationship between the educational environment and student progress. In this way, the text will support the preparation and training of educators as practitioner-scientists -professionals who know how to use assessment data dynamically to modify the instructional environment and maximize student outcomes.' - Theodore J. Christ, PhD, School Psychology Program, University of Minnesota, USA