"Our results are consistent in documenting the absence of beneficial effects associated with the DARE program. This was true whether the outcome consisted of actual drug use or merely attitudes toward drug use. In addition, we examined processes that are the focus of intervention and purportedly mediate the impact of DARE (e.g., self-esteem and peer resistance), and these also failed to differentiate DARE participants from nonparticipants. Thus, consistent with the earlier Clayton et al. (1996) study, there appear to be no reliable short-term, long-term, early adolescent, or young adult positive outcomes associated with receiving the DARE intervention."

Source

Lynam, Donald R., Milich, Richard, et al., "Project DARE: No Effects at 10-Year Follow-Up", Journal of Consulting and Clinical Psychology (Washington, DC: American Psychological Association, August 1999), Vol. 67, No. 4, 590-593.
http://www.ncbi.nlm.nih.gov/p…
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