By Beth Hardcastle and Kelly Justice

Fidelity is the cornerstone of RTI, yet it's often one of the weakest links in RTI implementation -- and one of the surest paths to system failure. Combining research and practical strategies, this resource explains why intervention integrity is critical to RTI success and also how to ensure interventions are carried out as intended.

Along with details of how the Every Student Succeeds Act describes the four tiers of research of increasing methodological rigor, you get guidance including:

• The intent of evidence-based programs under ESSA and how to put high-quality research into practice
• The nature and importance of integrity in RTI -- to help you gain staff buy-in
• Measuring and assessing fidelity of instruction and intervention
• Voices from the Field spotlighting real-world, practical insights from RTI experts
• "What to do" lists and a sample intervention implementation form to help you carry out an instructional session as designed