An effective classification system requires an interview and identification of gang affiliation at time of intake. Criteria for gang affiliation include self-admission, tatoos, gang-related current or prior activities, peer associates, family background, prior law enforcement contact, and identifiable gang paraphernalia. The gang member classification should include only identification information. The classification process is used to make appropriate decisions on housing and program assignment, but should not be the sole criteria for restricting movement or limiting privileges. Once classified, gang members should be tracked as they move through the local system and across jurisdictional boundaries. The major purpose of tracking is to protect staff, citizens, and gang members from potential harm and to prevent crime and delinquency. To be legally defensible, the system must consider privacy and confidentiality issues. Intake officers, gang investigators, parole officers, and police should communicate information to each other on gang members and their activities. A workshop program and list of participants are appended.