While most principal supervisors are former principals themselves, few come to the role with specific training in how to do the job effectively. For this reason, both the Washington, D.C., and Tulsa, Oklahoma, principal supervisor programs include a strong professional development component. In D.C., principal supervisors meet every Tuesday to receive training on topics such as leadership development and coaching. Once a month, they also participate in school walk-throughs with each other to observe their colleagues in action and provide feedback. They are typically accompanied by one of two deputy chiefs responsible for supervising the principal supervisors. “The walk-throughs give me a sense of how well they are pushing a principal on a critical issue. Are they providing actionable feedback, or just saying, ‘Everything’s great,’