In fact, differences in student achievement of 50 percentile points were observed as a result of teacher sequence after only three years. The data shows what just about everyone already knows.
Some teachers are enormously more effective than other teachers, year after year.
Dan Challenger, president, Public Education Foundation. Raise admission requirements. Provide high quality preparation programs. Create a new model of teacher compensation that is tied to performance and a new employment contract. Create a new school environment that provides teachers with the freedom and flexibility to achieve results.