Teacher evaluation should address the complexity of teaching by assessing individual teachers and by helping them continuously improve. Constructive feedback, evidence from multiple sources, and high levels of support are all essential. The six steps to effective teacher development and evaluation presented in this article are: (1) Match high expectations with high levels of support; (2) Include evidence of teaching from multiple sources; (3) Use information to provide constructive feedback to teachers, as befits a profession, not to shame them; (4) Create confidence in the quality of teacher development and evaluation systems and the school's ability to implement them reliably; (5) Align teacher development and evaluation to the Common Core State Standards; and (6) Adjust the system over time based on new evidence, innovations, and feedback.