"Focusing on the teacher as the leading player in assessment, this book offers a guiding framework for thinking about ongoing, formative assessment and explores how it can be adapted to the individual classroom. In addition to providing a research base for the importance of understanding and improving the types of assessment in the classroom that encourage learning, the document features examples, definitions, illustrative vignettes, and practical suggestions to help teachers and students obtain the greatest benefit from this regular evaluation and adjustment process." -- back cover. Includes bibliographical references and index.