In the wake of the accountability movement, school administrators are inundated with data about their students. How can they use this information to support student achievement? "Data Wise: A Step-by-Step Guide to Using Assessment Results to Improve Teaching and Learning" presents a clear and carefully tested blueprint for school leaders. It shows how examining test scores and other classroom data can become a catalyst for important schoolwide conversations that will enhance schools' ability to capture teachers' knowledge, foster collaboration, identify obstacles to change, and enhance school culture and climate. The rich experience of the contributors--among them exemplary school leaders and top scholars in the fields of statistics and testing--is reflected in the complexity and realism of the case studies that illustrate each chapter. [For the related books, see "Data Wise in Action: Stories of Schools Using Data to Improve Teaching and Learning (ED515276) and "Key Elements of Observing Practice: A Data Wise DVD and Facilitator's Guide" (ED515273).]