Principals are the chief teachers of law in their schools. However, many principals would say that teaching law is not in their job description and that they do not need another responsibility, but intentional or not, most principals already teach law--in staff meetings; in teacher conferences; in informal conversations; and when they develop, interpret, and apply school rules. This article explains why principals need to be conscious, informed, and effective law teachers and how they can make it happen. (Contains 9 resources and 3 online resources.)