Among international competitors, the U.S. is an economic leader but trails in many aspects of teacher preparation, investment, and continuous improvement. To change this situation requires a multi-part and comprehensive strategy. The good news is that examples of encouraging reforms exist in many places, and strong evidence shows that these…

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…