Educators know that students learn better when their teacher considers carefully how young people learn best. Yet, when administrators plan professional development for teachers, the author claims, they often forget to consider how teachers learn best. As principal of a private K-8 school, Scott arranges professional learning for her teachers in a way that honors adult learning styles. Just as many educators are now "flipping the classroom," Scott's school flips professional development. Teachers first do much of the learning individually at their own pace--by reading articles and watching videos Scott collects that center on the content they are to learn--and then meet together to strengthen that learning. By describing two recent professional development sessions for her teachers, Scott shows this flipped professional learning in action.