School mental health (SMH) programs are gaining momentum and, when done well, are associated with improved academic and social–emotional outcomes. Professionals from several education and mental health disciplines have sound training and experiences needed to play a critical role in delivering quality SMH services. School psychologists, specifically, are in a key position to advance SMH programs and services. Studies have documented that school psychologists desire more prominent roles in the growth and improvement of SMH, and current practice models from national organizations encourage such enhanced involvement. This article identifies the roles of school psychologists across a three-tiered continuum of SMH practice and offers an analysis of current training and professional development opportunities aimed at such role enhancement. We provide a justification for the role of school psychologists in SMH, describe a framework for school psychologists in the SMH delivery system, discuss barriers to and enablers of this role for school psychologists, and conclude with recommendations for training and policy.