Teachers have the greatest school-based effect on the achievement of any child in their classrooms, but highly effective principals can positively affect the achievement of every student in their schools. The difference between a highly effective principal and an average one is equal to two-to-seven months of extra learning per year for each child…

Locally controlled public schools are one of the cornerstones of our nation's democracy, yet many schools are not preparing students for success. Far too many students are not graduating, and many of those who do graduate are woefully unprepared for college or a meaningful career. Successfully initiating and sustaining meaningful improvements in…