As a philosophy and religious studies high school teacher in the United Kingdom, Tom Bennett discovered that a good deal of what was considered orthodoxy in the profession was unsubstantiated. It was the inspiration for his book, "Teacher Proof: Why Research in Education Doesn't Always Mean What It Claims, and What You Can Do about It," on which this article is based. The book bluntly exposes some of the bigger education myths that still rattle their chains in the classroom. Each chapter is devoted to a questionable educational theory; Bennett examines each claim made for its efficacy by simply following the research crumbs backward. He argues here that one of the most enduring myths he has encountered in education is the subject of this article: group work. Here he presents a discussion of the myth, and everyday realities of group work, and highlights 4 of the usually ignored drawbacks of group work. The article closes with Bennett's recommendation to his colleagues that they use group work when they feel it is appropriate to the task they want their students to achieve and at no other time.