General Background Global environmental degradation necessitates proactive waste management strategies within educational institutions. Specific Background Kranggan 4 State Primary School in Mojokerto previously faced severe hygiene issues due to accumulated leaf waste, creating discomfort and disrupting the learning atmosphere. Knowledge Gap While general school hygiene initiatives exist, comprehensive models integrating waste processing and entrepreneurial skill development for primary students from industrial worker families remain underexplored. Aims This research comprehensively describes the planning, implementation, and economic outcomes of the "Si Puan Pacarku" solid and liquid compost initiative. Results Utilizing a qualitative descriptive method involving observations and interviews, findings reveal a structured administrative process involving ecological cadres, teacher-student working groups, and continuous socialization. The initiative successfully converted organic debris into solid and liquid compost, alongside transforming plastic waste into marketable crafts. Consequently, students developed strong ecological awareness, demonstrated by habitual waste sorting, and gained entrepreneurial skills by marketing recycled products to generate school income. Novelty This study highlights a dual-purpose ecological initiative that uniquely combines hygiene restoration with tangible economic empowerment for elementary students. Implications The proven framework of this sustainability initiative serves as a highly ideal and replicable policy model for creating healthy and economically productive educational spaces. Highlights: Structured working cadres successfully converted accumulated leaf debris into marketable solid and liquid compost. Elementary learners demonstrated increased ecological consciousness through habitual sorting and active cleaning participation. The community initiative generated alternative institutional income by selling recycled crafts and processed materials. Keywords: School Hygiene, Waste Processing, Student Empowerment, Sustainable Education, Ecological Awareness
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