Ms. Stavney's work as a master teacher is informed by a three-year project our foundation funded to better understand how to build an evaluation and feedback system for educators.

WSJ: Bill Gates on the Importance of Measurement

Starting in 2009, the Gates Foundation supported a project known as the Measure of Effective Teaching, or MET, which worked with 3, 000 teachers to come up an evaluation and feedback system that helped teachers improve.

FORBES: Bill Gates Says There Is Something Perverse In College Ratings

The foundation and others have estimated that it could cost between 1.5% and 2% of the overall budget for teacher compensation and benefits to implement a feedback and evaluation system based on multiple measures of teaching performance.

CNN: Bill Gates: Invest in better teaching

The city said its evaluation plans included things like the implementation and use of student feedback surveys as well as specific considerations for teachers who are dealing with students who are English language learners and students with disabilities.

WSJ: NYC outlines teacher training, evaluation goals