Talented leaders are essential to building and sustaining successful organizations. This is especially true for schools, where principal leadership plays a major role in fostering student success. Research shows that principals are a significant school-level factor affecting student achievement, second only to classroom teachers. Like other types…

This case study provides superintendents, principals, and teachers with information on how three school systems have used an assessment developed by the Organisation for Economic Co-operation and Development (OECD)--the OECD Test for Schools--to monitor students' academic outcomes and inform shifts in policy and teacher practice to meet students'…