Teachers' implementation of differentiated supplemental instruction is critical to help students with or at risk for reading-related disabilities acquire early reading and vocabulary skills. This study represents an initial investigation of whether classroom teachers' intervention fidelity (exposure, adherence, and quality) of targeted reading…

A major commitment of the National Research Center on Learning Disabilities (NRCLD) has been to work with school sites that are implementing RTI. The work with these schools began in November 2002 after the U.S. Department of Education requested that NRCLD identify, describe, and evaluate the implementation of responsiveness to intervention (RTI)…

Considerable variation exists across response-to-intervention (RTI) approaches. There is currently insufficient research on outcomes associated with these different RTI approaches to inform decision-making. However, school psychologists who are asked to work within an RTI model need guidance to select an approach that has a high likelihood of…