This handbook introduces students to essential elements of preventing crime at school by making sure the design, use, and upkeep of the facility do not provide opportunities for criminal behavior--crime prevention through environmental design (CPTED). It discusses how to identify problem areas and the steps to take to make sure these problems are corrected. The handbook provides: (1) instructions for conducting a physical assessment of the school; and (2) guidance for delivering the results to administrators, faculty, and parents. The focus is on commonly used strategies that fall within the realm of student influence. Ideas are given for improvement activities and projects that can be undertaken by students, given the proper authority and guidance. Following an introduction, the handbook's sections discuss CPTED, natural surveillance, access management, territorial reinforcement, physical maintenance, and order maintenance, and discuss resources for proceeding with projects. (EV)