We will ask adolescents to come back to participating clinics to complete follow-up assessments at 6 months, 12-months,18-months, 24-months, 30-months and 36-months after completing the initial assessment. We will test the effects of adding the telephone sexual health educational program to maintain or enhance adolescents' use of HIV prevention behaviors and reduce incident STDs. If successful, the findings could have important implications for HIV prevention.