Principal evaluation systems without explicit and aligned professional learning simply re-create a system of compliance and fail to improve leadership capacity. Given the complexity of the role of today's principals, they must learn a new set of skills and knowledge to create innovative learning environments. To use principal evaluation as a tool for growth, principal supervisors must be able to coach and give powerful feedback, develop and deliver adult learning, facilitate group learning processes, and cultivate a culture of transparency and continuous learning. Districts must create the conditions that will allow principals to develop and grow. Principal evaluation can result in constructive change if districts recognize the interdependency among evaluation, effectiveness, and learning. The authors provide a set of strategies that will enable districts to use principal evaluation to help principals learn their way into effectiveness.