School principals are “invaluable multipliers of teaching and learning in the nation’s schools,” according to “Developing Excellent School Principals to Advance Teaching and Learning: Considerations for State Policy,” a new report commissioned by The Wallace Foundation and written by Paul Manna, a political scientist at the College of William & Mary, as well as an expert on state education policy. Several state and local arts advocacy organizations have created programs to educate principals on the benefits of arts programming and to develop cohorts of principals that will inspire others. This report gives an overview of the value of working with principals and how policies might be considered to help them promote better learning in all areas including the arts.