<p>This study examines school property vandalism in the Lagos Metropolis, Nigeria, using the equity-based model. The research sought to understand the prevalence of such acts from the students’ perspective, identify the underlying causes, and assess the effectiveness of existing preventive measures. A mixed-methods approach was employed, combining questionnaires administered to 416 students from selected public secondary schools with in-depth individual interviews. The findings indicate high student awareness (68.6%) of vandalism incidents, with common forms including graffiti on desks and walls and the intentional destruction of fixtures. Four major dimensions—academic, familial, institutional, and social factors—were identified through factor analysis as the main causes of vandalism. Identity crises among young people, inadequate security, and inadequate parental and teacher supervision were the most important perceived causes. According to the study, the two most significant types of vandalism were erosive vandalism—small, purposefully planned acts that eventually cause damage—and fun vandalism, which happens accidentally while students are playing and has no malicious intent. The study’s conclusions suggest that vandalism is a multifaceted issue arising from management, familial, institutional, and social factors.</p>