Now in a revised and expanded second edition, this established practitioner resource and text provides a framework for integrating schoolwide academic and behavioral supports to maximize outcomes for K-12 students. Best practices for developing and sustaining an integrated multi-tiered system of supports (iMTSS) are addressed, with attention to timely issues and diverse populations, including students who are English learners. Chapters cover team building, implementation science, evidence-based instruction, problem solving, assessment, and more. The book's utility is enhanced by a chapter-length case study, reproducible/downloadable tools, and boxed reflections and how-to recommendations from experienced implementers. New to This Edition Increased focus on integrating academic and behavioral supports into one seamless system across tiers for students from diverse backgrounds. Chapter on improving student engagement and attendance. Chapter on the role of online learning within an iMTSS. Chapters on catch-up growth and Tier 2 supplemental instruction.