This report presents a systematic literature review examining the effectiveness of school-based interventions in reducing obesity among children. The review begins by establishing the significance of childhood obesity as a global health concern, highlighting the role of schools in promoting children's health and well-being. The report outlines the research aims and objectives, which include investigating existing intervention programs, evaluating their efficacy, exploring challenges in implementation, and suggesting improvements. The methodology involves a qualitative literature review, detailing search strategies, study selection criteria, and data extraction methods. The findings are organized to present the results of the school-based interventions. The discussion chapter provides an in-depth analysis of the interventions. The report concludes with implications, conclusions, and recommendations for improving the effectiveness of school-based programs in obesity reduction. The causes, impacts, and different types of interventions are explored, providing a comprehensive overview of the topic.