Interventions that Work: Linda Dorn and Carla Soffos Visible Learning: John Hattie Text Complexity: Raising Rigor in Reading Douglas Fisher, Nancy Frey, Diane Lapp High Reliability School: Marzano, Warrick, Rains, DuFour Unmistakable Impact: Jim Knight Data Analysis for Continuous School Improvement: Bernhardt Keeping RtI On Track: VanDerHeyden and Tilly III Simplifying Response to Intervention Four Essential Guiding Principles: Buffum, Mattos, Weber