As a result of a dramatic shift over the last 10 years in how educators and administrators are supported in their professional learning, teachers are no longer working in isolation behind closed doors. Instead, professional learning has moved to the school and the classroom, and teachers are encouraged to share their work and their students' work.…

Three years ago, the Toronto District School Board, the largest in Canada and the fourth-largest in North America, began to explore demonstration classrooms as a way to create a richer model of job-embedded, differentiated, and personalized professional learning. By doing action research and examining a variety of professional learning models from…