This volume began as a means of reflecting on RTI's collective experience with social accountability, learning from past projects to improve our current and future development efforts. As the case studies developed, it became clear that they were of a quality and depth that should be shared more broadly, resulting in this book. We are grateful to F. Henry Healey, Alyson Lipsky, and Felicity Young, as well as Taylor Williamson, for their excellent work writing or reviewing the chapters of this book. In addition, a large number of RTI colleagues helped the chapter authors with insights, documents, and feedback related to each of the projects profiled; they are individually recognized for each case in the pages that follow. We would like to recognize support from RTI's Internal Research and Development funds to develop the cases and overview analysis, as well as prepare the manuscript for publication. In particular, Aaron Williams, Paul Weisenfeld, Luis Crouch, and Karen Posner championed support for this research. Finally, we would like to thank the RTI Press team, led by Karen Lauterbach. The peer review process, managed by Gary Bland, sharpened the writing and analysis. We are also grateful to the editors and designersincluding Erin Newton, Joanne Studders, Anne Gering, Sonja Douglas, and Alisa Clifford-for the care with which they treated our manuscript.