The School Initiative for Mental Health Advocacy (SIMHA), a Tata Institute of Social Sciences project, aims to create mental health-friendly schools across India. Supported by the SBI Foundation since 2020, SIMHA works with various government and private organizations. An endline assessment evaluated its impact, using a mixed-method approach. Findings show SIMHA’s relevance in promoting sustainable mental health initiatives, aligning with global and national mental health goals. SIMHA has effectively reached multiple beneficiaries through capacity building, research, and advocacy activities.