This paper presents a two-phase approach to drug prevention which can be implemented by the schools. Materials presented here describe aproaches taken by various schools or school districts nationwide. Phase One concerns board of education policies. The offenses of simple possession or use of a drug and possession with intent to sell are differentiated and appropriate disciplinary action for first, second, and third offenses are considered. Suspension and the recommmendation for expulsion are discussed. Phase Two of the drug prevention approach involves various forms of hassling actions by the schools, designed to teach students that drug use is too risky to engage in at school. Five techniques are described: (1) locker visits; (2) hall passes; (3) the "poor child must be sick" approach; (4) covert photography; and (5) the use of marijuana sniffing dogs. The use of dogs is described as a step-by-step procedure which will teach students that it is expensive and risky to bring drugs onto school grounds. (NB)