The idea that principals should focus more closely on teaching and learning did not emerge prominently until the mid-1990s. Then educators and policy makers began to realize that school leadership matters to student achievement. In a dozen years of working with states, districts, researchers and others, the Wallace Foundation has pinpointed five…

Teachers and principals don't always agree about the effects on education of accountability systems based on high-stakes testing. Mr. Jones and Mr. Egley look at the implications of these differing perceptions and suggest some strategies for creating a climate in which teachers and administrators can move forward on improving student learning.…