Principals play a pivotal role in fostering high-quality professional development (PD) and creating a culture of continuous learning for their teachers. As instructional leaders, it is imperative for principals to create the conditions—and provide the support necessary—for effective PD so that meaningful improvements in student learning can take place. At St. Vrain Valley Schools, a district of 33,000 students in Longmont, CO, principals have leveraged technology—notably the use o...