The Matatag curriculum is a comprehensive educational framework designed to enhance learning and development in Philippine public schools, focusing on holistic, inclusive, and culturally relevant teaching practices incorporated into peace and values education and reading enhancement. Using a mixed-method exploratory sequential design, this study aimed to develop an evaluation scale for the effective implementation of the Matatag curriculum. The findings revealed twelve essential themes from the views of teachers, underscoring the need for integrating interactive learning, critical thinking, technology integration, cultural relevance, and collaborative strategies to boost student engagement and outcomes. Further, Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) identified three core dimensions crucial for curriculum evaluation: Curriculum Design and Content, Teaching and Learning Enhancement, and Implementation and Support. These dimensions underscore the importance of a comprehensive, inclusive curriculum approach. While Structural Equation Modeling (SEM) indicated these dimensions were optimal for developing the Matatag curriculum’s evaluation scale. The refinement of the thirteen items as a final evaluation tool went through rigorous item analysis, resulting in a reliable instrument with a Cronbach's alpha of 0.896, ensuring precise curriculum implementation assessment. This process validated the research findings, both quantitative and qualitative. The study concludes that a thorough assessment of curriculum effectiveness necessitates a blend of strategies, including stakeholder feedback and regular evaluations, to foster ongoing improvement. It recommends that educators embrace a holistic approach featuring interactive learning, critical thinking, technology, cultural relevance, and collaborative methods to elevate educational outcomes.