Education That Matters: Investigating the Quality of Secondary Schooling in Support of Sustainable Development Goal 4

Background/purpose. This study explores the implementation of Sustainable Development Goal 4 (SDG 4)—which advocates for inclusive, equitable, and quality education—among high school students, with a specific focus on the interconnection between quality learning, learning environments, content, processes, and outcomes. Drawing on Vygotsky’s Sociocultural Theory, the research emphasizes that meaningful and sustainable learning depends on the dynamic interaction of well-structured content, inclusive pedagogy, and supportive classroom environments. Materials/methods. A quantitative cross-sectional design was used, involving 2,425 high school students in West Purwokerto, Indonesia. Using a Structural Equation Modeling (SEM-AMOS) approach, the study measured relationships among key quality indicators: content relevance, instructional performance, student engagement, and outcome effectiveness. Results. The results revealed strong correlations between quality processes and learning environments, as well as between learning environments and learning outcomes. However, weaker associations were found between content and process integration. The findings suggest that the realization of SDG 4 requires a holistic approach, integrating curriculum reform, teacher training, inclusive practices, and infrastructure improvement. By highlighting the interconnectedness of these educational dimensions, the study contributes valuable insights for policymakers, educators, and school leaders aiming to transform secondary education in support of sustainable development. Conclusion. In conclusion, the implementation of SDG 4 in high schools is not merely a policy goal; it is a moral and practical necessity. Empowering students to contribute significantly to a more just, peaceful, and sustainable world necessitates a steadfast commitment to the principles of inclusive, egalitarian, and excellent education