Our nation is squandering one of its most important resources--our best teachers--and children are paying the price. Current policy initiatives overlook the most obvious, immediate source of improved teaching effectiveness: The great teachers we already have. The top 25 percent of U.S. teachers--more than 800,000 of them--already achieve results…

Teacher effectiveness has the largest impact of school effects on student learning, and research indicates that top-quintile teachers produce learning gains three times (3X) that of bottom-quintile teachers. However, the supply of these "3X" teachers is limited. Meanwhile, 3X teachers affect only a small portion of children each year, no more than…

As digital tools proliferate and improve, solid instruction in the basics will eventually become "flat"--available anywhere globally--and the elements of excellent teaching that are most difficult for technology to replace will increasingly differentiate student outcomes. As a result, teacher effectiveness may matter even more than it…

Our nation is squandering one of its most important resources--our best teachers--and children are paying the price. We asked a simple question: "Will our nation's bold efforts to recruit more top teachers and remove the least effective teachers put a great teacher in every classroom?" We ran the numbers and discovered a disappointing…