This guide addresses school vandalism and break-ins, describing the problem and reviewing the risk factors. It also discusses the associated problems of school burglaries and arson. The guide then identifies a series of questions to help analyze each local problem. Finally, it reviews responses to the problem, and what is known about them from evaluative research and police practice. The term school vandalism refers to willful or malicious damage to school grounds and buildings or furnishings and equipment. Specific examples include glass breakage, graffiti, and general property destruction. The term school break-in refers to an unauthorized entry into a school building when the school is closed (e.g., after hours, on weekends, on school holidays). (Contains 70 endnotes.)