School change expert Michael Fullan and principal Michelle Pinchot collaborated on an experiment: As Pinchot tackled her first years turning around the culture of Heritage Elementary School in California--using ideas Fullan has promoted about school culture and leveraging teachers' power--she and Fullan checked in every few months on how the work was going. Drawing on their exchanges, they report on the strategies Pinchot used to launch change in a short period of time, and discuss eight key factors behind such change.