Turn skepticism about data into knowledge for true educational reform! More versatile than mere number crunching and statistics data can be an effective tool--or even a powerful catalyst--for change within a school. Lorna M. Earl and Steven Katz show educators how to become comfortable with data and provide valuable tools that school leaders and school improvement teams can use in their work including: Vignettes to support group discussion Activities to give readers a chance to practice ideas and concepts Task sheets Short case studies that show how the full process works