Book excerpt: Co-teaching has been increasingly adopted to support students in the general education classroom. After 20 years of field testing, we know what works—and what doesn't. In this practical guide, co-teaching and inclusion experts Toby J. Karten and Wendy W. Murawski detail the best practices for successful co-teaching and ways to troubleshoot common pitfalls. This book addresses the do's, don'ts, and do betters of * The co-teaching relationship and collaborative roles. * Co-planning instruction and assessment. * Co-teaching in action. * Academic and behavioral supports and interventions. * Collaborative reflections, improvements, and celebrations. Readers will gain valuable insights on what to start doing, what to stop doing, and how to improve their co-teaching practices to better reach all students.