Adolescents in general are at high risk for sexually transmitted infections (STIs), including HIV. Even higher rates of STIs have been observed among youth involved with the criminal justice system. Typically, these adolescents are younger at first intercourse, have a higher number of sexual partners, and report lower rates of condom use than their peers. Despite the fact that these adolescents are at greater risk for HIV/STIs, few prevention interventions have been developed for them. In addition, few interventions for adolescents target both substance use and sexual risk reduction. SEXUAL HEALTH AND ADOLESCENT RISK PREVENTION (SHARP) aims to fill these gaps. SHARP is an intensive, interactive single-session (divided into five sections) intervention lasting 3-4 hours that incorporates videos, lecture, group discussion and activities. The groups are organized by gender, either all male or all female, with no more than 10 per session (but on average, the ideal number per session is between 3-5 participants per session). Overall SHARP program goals are to deepen STI/HIV knowledge, improve correct condom use, reduce sexual risks and alcohol use and set long-term goals to utilize knowledge and skills learned during the session. SHARP was evaluated using a randomized controlled trial with three group-based conditions. These three conditions were HIV information only (control group); SHARP program (intervention group) and SHARP + motivational enhancement therapy (enhanced intervention group). The study was conducted over a 12 month period, with data collected in 5 waves (baseline, 3, 6, 9 and 12 months). The enhanced intervention condition (SHARP + Motivational Enhancement Therapy) was statistically different and more significant than the control condition (HIV Information only). Any decrease in alcohol problems over time was statistically significant in the SHARP condition and the SHARP + Motivational Enhancement Therapy, when compared to HIV Information only. SHARP is supported by the Office of Adolescent Health (OAH)'s Teen Pregnancy Prevention (TPP) program as an EBI that is medically accurate, age appropriate, and has proven through rigorous evaluation to prevent teen pregnancy and/or associated sexual risk behaviors. Click here to view more detailed information on this program.