School safety and security has become a topical issue internationally that concerns both educational research and policy. However, whereas several studies have focused on technical safety, less attention has been given to comprehensive safety and security management (SSM) and policies enhancing schools' safety culture. In order to provide new knowledge on the topic, this study addresses the following research question: What kinds of safety and security management development needs are related to a) technical, b) human and c) pedagogical leadership areas for enhancing comprehensive safety culture in Finnish basic education schools? This study uses a multiple case study approach and a multidimensional auditing tool for evaluating the SSM development needs in four Finnish basic education schools. The main findings highlight several developmental needs in the planning, implementation and evaluation for safety and security work. On these bases, this study suggests that policies and guidelines need to be improved both on the school and national levels. Particularly, special attention needs to be focused on the staff training, competence and comprehensiveness of safety and security management. The findings of this study are topical for both Finnish and international school settings that address enhancing a comprehensive and inclusive safety culture.