American education has problems, almost everyone is willing to concede, but many think those problems are mostly concentrated in America's large urban school districts. In the elite suburbs, where wealthy and politically influential people tend to live, the schools are assumed to be world-class. Unfortunately, what everyone knows is wrong. Even…

The United States' education system needs to take its critical next step: fairly and accurately measuring teacher performance. Successful reforms to teacher pay, career advancement, professional development, retention, and other human capital systems that lead to better student outcomes depend on it. Where can the U.S. find the best-practice…