The [programme evaluation] kit was developed as a project of the Center for the Study of Evaluation (CSE), University of California, Los Angeles. The objective of this book is to acquaint the reader with the ways in which evaluation results can be made more credible through careful choice of a design, prescribing when and from whom, the data will be gathered. The book helps the reader choose a design, put it into operation and analyse and report the data that has been gathered. The book’s intended message is that attention to design is important. Education, business and human service settings are included in this publication. Through the use of diagrams, step-by-step directions, flow charts, and extensive examples, the book shows how a variety of design options can be conceived and implemented. Focusing on quantitative designs, it shows what to do when things go wrong and presents detailed methods for collecting, analysing, and presenting data for each design. The information about design contained in this book will be useful for both the formative and summative evaluator, although the perspective of each will vary.