This chapter, by Deb M. Kneser, discusses the collaborative analysis of student work as an effective method of professional development. By engaging in a collaborative review of student work, science educators can analyze the learning experiences they have designed for their students and determine their effectiveness. The chapter begins with an overview of the need for teacher professional development, followed by a discussion of protocols for collaboratively examining student work. A short vignette of teachers engaging in this process concludes the chapter. Teacher background information, standards, assessments, references, and resources are provided. This book selection also includes the Table of Contents, Foreword, Preface, Acknowledgments, and Index.