The RPP will draw from existing research and scholarship on PL as well as their experiences in Phase One to develop a series of teacher PL modules grounded in the integration model developed in Phase One. The modules will be piloted and refined as part of a new course in the UMD M.Ed. STEM Teacher Leadership program, which will be taught by members of the project team. In this course, we will introduce in-service teachers to CT/CS tools and practices via inquiries anchored in sustainability. We will also provide support for teachers to modify state- and county-generated lessons to meaningfully incorporate CT/CS tools and practices. As teachers taking the course are working toward a leadership degree, the modules will adopt a “train-the-trainer” approach with structured opportunities in Phase Three to facilitate abridged versions of the modules for others in their school communities. This course will be required for future cohorts of teacher leaders as part of the M.Ed. STEM Teacher Leadership program, providing an opportunity for the products generated by the RPP to live well