The increasing flexibility enjoyed by academies and other schools over teachers' pay and changes in the appraisal regulations in 2012 give schools in England a real opportunity to shape teacher evaluation and development to improve standards and reduce in-school variations between subjects and between pupils of different backgrounds. Yet how this is achieved has still to be resolved. What is also clear is that effective evaluation is good for pupils and good for teachers. It can improve the quality of teaching, provided it is accompanied by good feedback, and it can lead to better results for pupils and improved learning. Gauging teacher effectiveness can also be measured by: (1) gains in test scores; (2) classroom observations; and (3) pupil surveys. While each method has weaknesses, each has its place within a comprehensive teacher evaluation system. This report provides ten tips for successful teacher evaluation and reviews three methods of teacher assessments available to headteachers and other school leaders in England and Wales.