Understanding How Tiered Intervention Platforms Improve Academics

About the Research

A series of rapid response studies in 2024 and 2025 examined student growth and school-level implementation across five interventions (Lexia Core5, Lexia PowerUp, iReady Math, Language! Live, and S.P.I.R.E / Sounds Sensible). Students demonstrated growth across all interventions, with minimal differences by intervention type. However, growth varied meaningfully across schools, suggesting implementation differences mattered more than the specific intervention. Follow up qualitative analyses of high-growth schools examined common approaches to tiered implementation and enabling conditions that supported more effective use.

MNPS Study Team Members

Katie Pattullo (Director, Multi-Tiered Intervention System of Supports)
Casey Souders (Data Coach)
Melissa Brock (Coordinaor, Dyslexia Specific Instruction and Intervention)
Krista Davis (Director, Research and Evaluation)

Vanderbilt Study Team Members

Kelley Durkin (Research Assistant Professor)
Luke Rainey (Senior Research Coordinator)
Marcia Barnes (Professor of Special Education)

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