Background and Aim: Based on the Singapore School Excellence Model, this study aims to explore the content, characteristics, and effectiveness of the current internal quality assurance system in Singapore's education sector. The research seeks to analyze the connotation of the School Excellence Model through its two dimensions of "factors" and "effects," measured by nine quality standards, and to provide insights for other countries in constructing their internal quality assurance systems. Materials and Methods: This study employed qualitative research methods, including comprehensive data analysis and case study analysis. First-hand data and information were collected from case study schools in Singapore. Subsequently, in-depth interviews were conducted with eight participants, including teachers, education professionals, and parents, to examine the Singapore School Excellence Model from multiple dimensions and analyze the characteristics of Singapore's internal quality assurance system in education. Results: The study identified five key components of Singapore's internal quality assurance system: quality strategic assurance, quality input assurance, quality process assurance, quality outcome assurance, and quality mechanism assurance. The system demonstrates four distinctive characteristics: emphasizing independent decision-making of schools, comprehensively assessing cause-and-effect relationships, integrating excellence and forward-thinking approaches, and fostering close interaction between schools and society. The system effectively provides a solid foundation for comprehensive student development, enhances work efficiency, promotes continuous school improvement and characteristic development, and strengthens international competitiveness. Conclusion: Singapore's School Excellence Model provides an effective framework for internal quality assurance through systematic integration of leadership development, strategic planning, and stakeholder engagement. To establish effective internal quality assurance systems, educational institutions should develop holistic evaluation frameworks, invest in leadership and teacher development, and strengthen collaborative partnerships with stakeholders. The Singapore experience demonstrates that successful internal quality assurance requires sustained commitment and careful adaptation to local contexts while maintaining student-centered excellence.
Wang et al. (Sun,) studied this question.