Mental health and well-being significantly impact students' academic performance, social interactions, and school engagement. Partnering with communities can enhance the effectiveness and reach of mental health initiatives and supports within educational settings. By collaborating with community organizations and agencies, schools can augment resources and increase their capacity to effectively implement multi-tiered and comprehensive approaches. This action guide presents ways in which school-community partnerships can help implement key elements of mental health supports and services and offers action steps for schools, local educational agencies (LEAs) and state educational agencies (SEAs) to foster effective collaboration between schools and communities. Its aim is to inform and support school, community, LEA, and SEA leaders as they consider, develop, or implement partnerships as a strategy for providing equitable, high-quality mental health supports and services, focusing specifically on partnerships critical for implementing trauma-informed approaches and social and emotional learning (SEL) as well as supports for staff well-being.