This study prospectively follows 135 children 5-12 years of age with sexual behavior problems from a randomized trial comparing a 12-session group cognitive-behavioral therapy (CBT) with group play therapy and follows 156 general clinic children with nonsexual behavior problems. Ten-year follow-up data on future juvenile and adult arrests and child welfare perpetration reports were collected. The CBT group had significantly fewer future sex offenses than the play therapy group (2% vs. 10%) and did not differ from the general clinic comparison (3%), supporting the use of short-term CBT. There were no group differences in nonsexual offenses (21%). The findings do not support assumptions about persistent or difficult to modify risk and raise questions about policies and practices founded on this assumption.