The second edition of the Impact Evaluation in Practice handbook is a comprehensive and accessible introduction to impact evaluation for policy makers and development practitioners. First published in 2011, it has been used widely across the development and academic communities. The book incorporates real-world examples to present practical guidelines for designing and implementing impact evaluations. Readers will gain an understanding of impact evaluations and the best ways to use them to design evidence-based policies and programs. The updated version covers the newest techniques for evaluating programs and includes state-of-the-art implementation advice, as well as an expanded set of examples and case studies that draw on recent development challenges. It also includes new material on research ethics and partnerships to conduct impact evaluation. The handbook is divided into four sections: Part One discusses what to evaluate and why; Part Two presents the main impact evaluation methods; Part Three addresses how to manage impact evaluations; Part Four reviews impact evaluation sampling and data collection. Case studies illustrate different applications of impact evaluations. The book links to complementary instructional material available online, including an applied case as well as questions and answers. The updated second edition will be a valuable resource for the international development community, universities, and policy makers looking to build better evidence around what works in development.

This book is the product of 30 years of experience with program evalua tion. During this time, both service recipients and educational and social programs have experienced major cultural and political shifts in service delivery philosophy, including a focus on quality, mainstreaming, deinsti tutionalization, community inclusion, and an emphasis on measurable outcomes. Recently stakeholders of these programs have demanded more than just the provision of service, forcing program administrators to evalu ate their programs' effectiveness and efficiency. The "era of accoun tability" is here, and my major goal in writing this book is to help current and future program administrators understand that they need to look beyond simply the provision of service. Indeed, they need to be competent in outcome-based evaluation, which I define as a type of program evaluation that uses valued and objective person-referenced outcomes to analyze a program's effectiveness, impact or benefit-cost. By design, this book can be read from the perspective of a consumer or producer of outcome-based evaluation. As a consumer, the reader will be introduced to the various techniques used in outcome-based evaluation and how to interpret data from outcome-based evaluation analyses. As a producer, the reader will be instructed in how to do outcome-based evalu ation analyses, along with how to use and act on their results. For both the consumer and producer, two questions should guide the use of outcome based evaluation.

The District of Columbia (DC) has struggled for decades to improve its public education system. In 2007 the DC government made a bold change in the way it governs public education with the goal of shaking up the system and bringing new energy to efforts to improve outcomes for students. The Public Education Reform Amendment Act (PERAA) shifted control of the city's public schools from an elected school board to the mayor, developed a new state department of education, created the position of chancellor, and made other significant management changes. A Plan for Evaluating the District of Columbia's Public Schools offers a framework for evaluating the effects of PERAA on DC's public schools. The book recommends an evaluation program that includes a systematic yearly public reporting of key data as well as in-depth studies of high-priority issues including: quality of teachers, principals, and other personnel; quality of classroom teaching and learning; capacity to serve vulnerable children and youth; promotion of family and community engagement; and quality and equity of operations, management, and facilities. As part of the evaluation program, the Mayor's Office should produce an annual report to the city on the status of the public schools, including an analysis of trends and all the underlying data. A Plan for Evaluating the District of Columbia's Public Schools suggests that D.C. engage local universities, philanthropic organizations, and other institutions to develop and sustain an infrastructure for ongoing research and evaluation of its public schools. Any effective evaluation program must be independent of school and city leaders and responsive to the needs of all stakeholders. Additionally, its research should meet the highest standards for technical quality.