This Noyce Track 3 project aims to serve the national need of developing highly effective computer science teachers. Additionally, this project aims to support 15 fellows by providing graduate coursework culminating in a South Carolina add-on certification endorsement in Computer Science. The project intends to allow teachers to collaborate with other teachers and project staff to create a statewide rural computer science teacher network, a teacher-driven professional community focused on addressing the unique challenges and opportunities faced by rural computer science teachers. The proposed project components are positioned to enable high-achieving practicing teachers to become computer science teacher-leaders in their rural communities. This project at The Citadel is a collaboration between The Citadel’s Zucker Family School of Education and Swain Family School of Science and Mathematics, as well as Orangeburg County School District and the Computer Science Teachers Association. Project goals include: 1) building master teacher fellows' (MTFs) pedagogical and CS content knowledge; 2) building MTFs' teacher leadership skills; and 3) supporting MTFs to sustain the South Carolina chapter of the CSTA. CS4SC will draw on theories such as Community of Practice to achieve these goals and answer the following research questions: RQ1. Which evidence-based strategies are most effective in the creation of highly effective teacher leaders in rural districts? RQ2. How does partici