This pilot project tested the feasibility of an evidence-based HIV Intervention Program (HIP) program among 64 male youth, most of whom were African American or Hispanic, in Los Angeles County probation camps. Comparisons were made between adolescents who participated in HIP and a control group on changes in (a) condom use, (b) sexual intercourse under the influence of drugs, (c) knowledge of HIV prevention behaviors, and (d) attitudes toward condom use. Compared to the control group, the intervention group demonstrated significant increases in condom use and significant decreases in their endorsement of the attitude, ''If you want to use a condom, your boy-friend or girlfriend might think you don't trust them.'' These preliminary findings suggest that the HIP program influences key HIV-related constructs among male juvenile offenders.