This guide, intended for participants in the fifth course of the National School Resource Network Core Curriculum, contains an activity/content summary for each module of the course, worksheets, and background materials. Designed to address the full range of preventive measures utilized to improve the security of the school both during and after school hours, this course provides participants with a variety of alternative approaches to school security. Specifically, the course looks at an overview of security problems, use of nonsecurity staff and community members to prevent problems, physical plant security, and design and upgrading of security programs. (Author/MLF)