Allison Garland knows why Learning Leaders for Learning Schools, an intensive professional learning cohort for certain Phoenix-area principals and district office personnel, works so well. Actually, that’s a little misleading. There are, in fact, many reasons the three-year program, supported by the Arizona Department of Education and Learning Forward (with a grant from American Express and the National Association of Secondary School Principals), is showing great results after its first year. Those reasons range from a commitment to collaboration to buy-in from everyone involved in Learning Leaders. But what has Garland, executive director of school leadership at Littleton Elementary School District #65 in Arizona, and her team of principals so excited about tackling their problem of practice is the opportunity to create a supportive professional