Background: The school meals program has multiple objectives of education, nutrition, and value transfer. To ensure achieving the goal, total quality management (TQM) is implemented in the school meals program. Supply chain issues pose significant challenges to TQM implementation in the program execution. Aim: This study aims to examine national and international capacities in supply chain management by analyzing the variety of food items delivered through the school meals program. Methods: The Bayesian Mindsponge Framework, combining the reasoning strengths of Mindsponge (...) Theory and inference advantages of Bayesian analysis, was employed on a dataset of 126 government representatives who manage large-scale school meal programs in 126 different countries. Results: Findings showed that the method of obtaining supplies, whether through in-kind donations from local, regional, national sources, or national food reserves and purchasing from neighboring or distant countries, had a significant positive association with the variety of food items included in school meals or snacks. Conversely, obtaining supplies in-kind from neighboring or distant countries had a significant negative association with the food variety. Additionally, purchasing supplies from local, regional, or national food reserves had an unclear association with the food variety. Conclusions: Findings underscore the importance of supporting the World Bank and World Food Programme’s recommendation to rely more on local resources and capacities. Enhancing supply chain management at the national level is crucial for developing a long-term and sustainable school meals program. (shrink)