This study explores the role of school-community partnership in enhancing the effective management of secondary schools in Nigeria. In response to the growing challenges faced by Nigerian schools such as inadequate resources, poor infrastructure, and high student absenteeism. The study examines how collaboration between schools and local communities can improve administrative processes, student engagement, and overall educational outcomes. A mixed-methods design was employed, with quantitative data collected using a structured questionnaire from 120 teachers, school administrators, and community leaders, and qualitative data gathered through semi-structured interviews. The results revealed a significant positive relationship between school-community engagement and student engagement, indicating that active community involvement leads to improved student outcomes. However, the study found no significant direct link between school-community engagement and school management effectiveness. Barriers to effective collaboration were identified, including communication challenges and resource constraints, though these did not significantly hinder the impact of partnerships on student engagement. The study recommends that policymakers implement structured frameworks for school-community engagement, foster regular communication, and create training programs for teachers and community leaders to maximize the potential of school-community partnerships in Nigerian secondary schools.