Their model outlines the reciprocal interactions among several elements of principal, teacher, and teacher leader behavior within distributed forms of leadership to improve teaching and learning “in ways that advance the collective work in their schools . . . exercised in an organized, collective enterprise” (King & Bouchard, 2011, p. 654-655). These elements include teachers’ knowledge, skills, and dispositions; professional community; technical resources; and program coherence. In their model, teachers’ growth requires increasing their knowledge of the essential functions of teaching: curriculum, planning, assessment, content knowledge, professionalism, high expectations for learners, and reflection. They framed professional community as a collaborative process where all stakeholders are accountable for goal setting and engaging in mutually shared problem-solving strategies. Linked closely is coherence and technical resources, described as the extent to which a school’s goals are clear, reachable, and supported by capital, human, technology, and instructional resources. Ref. 4