The number of juveniles tried as adults increased by 71 percent from 1985 through 1994. A comprehensive look at the growing population of youthful offenders housed in adult facilities and guidance in managing this special needs population is provided. Section 1, "History and Current Realities," includes a brief review of the history of the criminal justice system, consideration of legal issues, the adult adjudication of juveniles and an argument for changing paradigms. Tables of state-by-state data support this review. Section 2, "Adolescent Development," covers normal development and aggression, violence, and the development of antisocial behavior. Section 3, "Organization, Administration, and Management Issues," covers staff, classification, needs assessment, and security issues. Section 4, "Special Needs Populations," deals with substance abuse and treatment, treatment of youthful sex offenders, the neglected and abused adolescent, suicidal offenders, and special education programming. Section 5, "Program Design, Development, and Implementation Issues," provides a guide to effective programming for education, counseling, health and mental health, recreation, mentoring, and gangs. Section 6, "Current Practices and Resources," deals with professional organizations and future directions. Appendixes provide special definitions of terms and a security checklist. (EMK)