Co-teaching is a popular service delivery model for students who are entitled to special education or other specialized services, such as support services for English learners. Evidence shows that the implementation of co-teaching is significantly associated with improved student outcomes. However for co-teaching to be effective, teachers need to thoroughly understand what the arrangement entails and what it takes to make co-teaching work.In this second edition of the best selling quick-reference laminated guide, Dr. Marilyn Friend, a renowned authority on co-teaching, provides educators with an overview of the fundamental "what," "why," and "how" of co-teaching.Dr. Friend outlines six the following six co-teaching approaches, along with recommended frequency of use and variations for each.