<![CDATA[Organic waste management in schools remains a persistent environmental challenge that affects hygiene, air quality, and the overall learning climate. In many schools, organic waste is still burned or buried, reflecting limited ecological literacy and insufficient technical capacity to convert waste into productive resources. At the same time, the integration of entrepreneurship education within science learning remains underdeveloped. This community service programme introduced a school-based organic waste management innovation through the P4-E approach (Training, Practice Implementation, Marketing, and Evaluation) to develop greenpreneurship among science teachers and students. The programme involved 50 participants from the Science Teachers’ Working Group (MGMP IPA) and SMP Negeri 1 Slawi, Tegal Regency. Activities included EM-4 biofermentation compost training, practical compost production and packaging, digital marketing development, and financial management mentoring. Findings indicate substantial improvement in ecological awareness, technical composting skills, and entrepreneurial capacity. Participants demonstrated the ability to produce market-ready compost products and implement digital promotion strategies. The P4-E approach functioned as an integrative empowerment model that linked science education, environmental action, and entrepreneurship development. The programme contributes to advancing SDGs 4, 8, 12, and 13 by institutionalizing sustainable waste management practices within the school context.]]>
