There is a global push for a comprehensive school mental health system to meet the mental health needs of children and youths in school. To respond effectively to these needs, parents, schools, and communities must recognize the value of collaborating as partners. The term parent-school-community partnership refers to the genuine collaboration among families, schools, communities, individuals, organizations, businesses, and government and nongovernment agencies to assist students’ emotional, social, physical, intellectual, and psychological development. To realize the goals of effective partnership in promoting school mental health of children and youths, ongoing assessment of the schools’ needs, and the available resources of local, state, and national communities, agencies, and organizations is necessary for the provision of effective partnership interventions. In partnership, parents, educators, and community members work together and share responsibilities for the development of the “whole child.” A multitier system of partnership support could be beneficial in the planning, implementation, and evaluation of school mental health interventions and evidence-based programs.