Teachers need to continually improve their practice in order to promote student learning. Further, the changes called for by reforms such as the Massachusetts curriculum framework for English Language Arts and Literacy, the Massachusetts curriculum framework for mathematics, and the Massachusetts framework for educator evaluation require teacher learning that will help them enhance their knowledge and develop new instructional practices. Such improvements will in turn promote student learning. This teacher learning can occur during district and school-based professional development. This handbook provides the District's vision along with resources.