This "Informed Educator" examines research-proven strategies for implementing and sustaining school improvement by looking at the key elements of the process, enabling conditions for improvement, issues of school culture, and implementation. It also looks at school turnarounds and how to sustain school improvement once reforms are implemented.

School improvement can be a complex, messy business. At its most basic, school improvement is change--change that might require people to abandon long-held beliefs and practices, shift roles, and learn new skills. Kilgore and Reynolds (2011) suggested that successful change requires that people change their perceptions as well as their actions.…

Class-size reduction (CSR) has been a complex and contentious issue for the last quarter century. Although the small-class concept was adopted because it appealed to common sense, research over time has revealed a mix of confounding variables, instead of a definitive conclusion. Some CSR efforts, such as Tennessee's Project STAR and Wisconsin's…