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…

In its 2003 report, School Survey on Crime and Safety, the National Center on Education Statistics (NCES) found that, during the 1999-2000 school year, 29% of schools reported having more difficulty with student bullying than with any other single discipline problem. A similar 2004 NCES report, Indicators of School Crime and Safety, found that, in…