In recent years, teacher collaboration has emerged as an important strategy to drive improvement, informed by research showing how on-the-job interactions can boost teacher development and effectiveness. Schools across the United States are adjusting their professional cultures and workplace practices in response, creating formal opportunities for…

The processes of developing and the results of testing a master's degree program designed to increase the number and quality of secondary-level earth science teachers are described in this paper. The master's program is intended to serve practicing secondary-level science and math teachers who lack subject-area endorsement in earth science. There…