This document discusses professional development for teachers. It emphasizes that professional development should drive high standards, excellence, and teacher quality. It should provide teachers with ongoing support and tools to implement new instructional strategies. Effective professional development includes face-to-face training, customized collaborative modules, and blended online and in-person options. Challenges include transitioning to a data-driven approach, changing teaching practices, and engaging teachers in ongoing professional learning communities. Professional development is a process, not an event, that develops collaborative communities for teachers to provide feedback and share resources.