The 2002 Future of School Psychology Conference called for reform of current models of professional school psychology, including a paradigm shift toward a public health model of practice. This article explores the role of school psychologists in efforts to achieve an integrated public health and public education model for delivering comprehensive school-based mental health services. Building on expertise as psychological and educational consultants, school psychooogists can play a unique role in facilitating the necessary systemic reform and capacity building for comprehensive mental health service delivery. This revised role requires redefining school-based consultation to include consultation for capacity building, and rethinking professional preparation to ensure expertise in public health models, inter-agency and interdisciplinary collaboration, participatory action research, and comprehensive service delivery.