This 12 page review of the 1999 Northwestern University research project on Teen Challenge was written by Andrew Kenney, a professor at Vanguard University. Northwestern University produced a major study of Teen Challenge graduates from across the USA, surveying graduates of the three largest Teen Challenge centers in the USA. This research project, conducted by PhD candidate Aaron Bicknese, was the first of its kind to survey Teen Challenge graduates on a national scope. The three Teen Challenge centers providing the source of graduates for this research project are located in Rehrersburg, PA, Cape Girardeau, MO, and Riverside, CA. These centers work with males only. The focus of this study was to assess the effectiveness of the Teen Challenge approach to treatment of drug and alcohol addiction by surveying graduates who had been out of Teen Challenge for 12, 18 and 24 months. Results indicated that Teen Challenge had great success with those who came from severely dysfunctional family backgrounds with long term addictions.