The MET was a three-year study designed to determine how to best identify and promote great teaching. The project has demonstrated that it is possible to identify great teaching by combining three types of measures: classroom observations, student surveys, and student achievement gains. Additionally it suggest that good systems should not only identify great teaching, but also provide the feedback teachers need to improve their practice and serve as the basis for more targeted professional development.
The MET project, which was funded by the Bill & Melinda Gates Foundation, was a collaboration between dozens of independent research teams and nearly 3,000 teacher volunteers. The findings are useful to school districts working to implement new development and evaluation systems for teachers.