Like in his landmark book The Art and Science of Teaching, Robert Marzano and his co-authors once again make a definitive case based on extensive research. Find out what it takes to create a teacher supervision and evaluation system that's more apt to lead to higher student achievement, including: *Five school-level conditions that are essential to systematically developing teacher expertise. *Four domains of teaching practice that provide a focus for instructional improvement. *Five ways to provide teacher feedback that avoids the pitfalls of a checklist approach. Going way beyond scripted observation routines and typical value-added measurements of teacher effectiveness, the authors open your eyes to broad principles of effective supervision that apply to all kinds of schools.