Get the book The Art and Science of Teacher Coaching Visit Nancy and Doug's website, FisherandFrey.com About the Guest Nancy Frey, PhD is a professor in educational leadership at San Diego State University and a teacher leader at Health Sciences High and Middle College. She is the author of dozens of books, including The Courage to Learn, The Art and Science of Coaching, How Scaffolding Works, and The Illustrated Guide to Visible Learning.    This episode of Principal Center Radio is sponsored by IXL, the most widely used online learning and teaching platform for K-12. Discover the power of data-driven instruction in your school with IXL—it gives you everything you need to maximize learning, from a comprehensive curriculum to meaningful school-wide data. Visit IXL.com/center to lead your school towards data-driven excellence today.