This book offers step-by-step activities compatible with leading differentiated instruction (DI) training materials. It uses a "one-size-does-not-fit-all" approach to faculty training, observation, and supervision for DI implementation, enabling teachers, trainers, and principals to identify their own unique strengths and concerns as they work to engage students in the classroom. After "Introduction: Adults Need Differentiated Learning Opportunities Too," Part 1, "Building School Capacity through Professional Development," includes school capacity and student achievement and job-embedded strategies for differentiated professional development. Part 2, "Book Study Using 'Differentiated Instructional Strategies: One Size Doesn't Fit All'" and Other Training Resources," discusses: creating a climate for learning; knowing the learner; assessing the learner; adjusting, compacting, and grouping; instructional strategies for student success; and curriculum approaches for differentiated classrooms. Part 3, "Managing Change in the Professional Learning Community," looks at the implementation process and observation and supervision. Training resources are listed. (Contains approximately 144 references.) (SM)