Proposes multisystemic educational prevention approach to Acquired Immune Deficiency Syndrome (AIDS) for adolescents. Model described uses intrapersonal, interpersonal, and social processes incorporating school-family-community system. Examples focus on AIDS in African American and Hispanic adolescents, emphasizing sociocultural factors relevant to these populations. Stresses role of family therapist as person who develops, implements, and evaluates AIDS prevention programs. (Author/NB)