This qualitative study assessed the implementation and integration of the Water, Sanitation, and Hygiene in Schools (WinS) Program in secondary schools within the Mabini District. Interviews with Win's coordinators were thematically analyzed based on the DepEd WinS monitoring checklist, revealing that water supply and sanitation were partially addressed. Still, hygiene promotion, health education, and deworming were not consistent. There was minimal integration into science instruction because there were no structured lesson plans, a lack of awareness, and inadequate teacher training. Administrative support and MOOE funding as well as stakeholder collaboration were critical for sustainability. Missing these opportunities to grow environmentally responsible behaviors is these gaps. The study shows that education is the place where Win's concepts can be embedded to conserve water, reduce waste, and help build climate resilience in mitigating global warming. Teacher capacity needs to be strengthened and WinS needs to be aligned with curriculum goals toward long-term behavioral change and environmental sustainability.