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Key Findings:

• As a supplement to the regular school curriculum, Wise Guys did not reduce boys’ likelihood of sexual initiation; at the end of the two-year follow-up, these rates were low for both the group who participated in Wise Guys and the control group.
• The longer-term impact findings did show, however, that Wise Guys led to a sustained increase in students’ knowledge of contraception and sexually transmitted infections after two years, increased their support of condom use, and strengthened boys’ motivation to avoid getting someone pregnant.
• Wise Guys did not change boys’ intentions to have sex, nor did it change their relationship attitudes, goal-setting ability, or communication skills after two years.