When teachers use data effectively, students see results. Part of a series on Learning Forward's seven Standards for Professional Learning, this volume guides teachers and school leaders toward successful data-based decision making--an essential component of effective professional learning and school development. The book's features include: An original "think piece" by Thomas Guskey on using data in deliberate and thoughtful ways Specific implementation strategies that focus on analyzing student, educator, and system data and assessing progress A detailed case study of one district's journey to successful use of data and how it led to measurable improvement in student achievement