The Advanced Studies in Teaching and Learning (ASTL) program at George Mason University offers teachers online and face-to-face M.Ed. and certificate options to expand their content and pedagogical knowledge while studying their own teaching.
Advanced Studies in Teaching and Learning is a program designed for teachers and educators with at least one year of education experience who are looking to further their professional knowledge. New tuition discounts for Virginia educators can be found here http://cehd.gmu.edu/news/stories/tuition-discounts.
To develop the content, pedagogical content knowledge, leadership skills, and research capacity of practicing teachers who want to take an inquiry stance on their educational practice and lead from the classroom as they contribute to on-going school improvement and educational change.