School nurses play a critical role in the provision of mental health services in the school environment and are valuable members of the coordinated student mental health team. They possess expertise to navigate in today's complicated educational and health care systems, and it is estimated that school nurses spend 33% of their time addressing student mental health issues. Despite their role and expertise, school nurses are often not recognized as part of the school mental health team and, thus, their role in student mental health care and the full collaboration and coordination with other education and mental health professionals in the school has yet to be fully realized. This article reviews school nurse mental health expertise, models of mental health service provision, and current mental health practices as reported by national stakeholders. In addition, it highlights school nurse barriers and additional training needs related to student mental health care and provides concrete recommendations for building strong collaborations between school nurses and other education and mental health professionals to support student mental health.