This paper explores how exemplary teachers integrate three forms of knowledge in order to help student learn. This triad of knowledge is composed of professional knowledge (subject matter, curricular, and pedagogical knowledge), interpersonal knowledge (relationship with students, the education community and the local community), and intrapersonal knowledge (reflection, ethics, and dispositions). An extensive literature review and research with exemplary elementary, middle, and high school teachers revealed that the teachers' understanding of what it means to be a teacher involves developing and integrating professional, interpersonal, and intrapersonal knowledge in ways that allow them to structure the physical, social, and intellectual environment of their classrooms. These teachers indicated that students need to learn more than subject matter in order to be ready for life beyond the classroom. Also, development of the triad of knowledge is a lifelong process that is easier if habits and dispositions are formed when children are young. A number of ways exemplary teachers help students learn are briefly described. (Contains 29 reference). (ND)