Lycée Français de San Francisco (Lycée) exemplifies a deeply rooted, mission-driven commitment to environmental sustainability, whole-child well-being, and community partnership across its three diverse campuses. Distinct not by wealth but by decades of intentional practice, the Lycée has integrated sustainability into its identity, curriculum, and operations since the 1960s, blending French educational values with Northern California’s rich ecosystems. From preschool through grade 12, students engage in hands-on learning experiences that explore ecology, STEAM, biodiversity, wellness, and climate citizenship across urban, coastal, and bayside settings, learning to view sustainability as both a scientific and civic responsibility. This work is strengthened through community collaboration, including the student-led Eco-Delegate program, partnerships with local and international organizations, and strong family and donor engagement, all of which support renewable energy, waste reduction, and environmental education initiatives. Guided by its 2025-2030 Strategic Plan, the Lycée sustains long-term impact through investments in renewable energy, water-wise landscapes, efficient facilities, green transportation, and wellness-centered design, positioning the school as a model for holistic, enduring environmental excellence and the development of globally minded, environmentally literate citizens.