Project SUCCESS’s effects on substance use among alternative high school students

Students in intervention schools reported greater use of illegal drugs excluding marijuana immediately after program implementation.

• Control group students reported less use of illegal drugs excluding marijuana compared to intervention group students at the first posttest.
• The difference in illegal drug use between groups did not persist one year later.
• No other significant effects on substance use outcomes were observed.
• Low program exposure among students may have contributed to the lack of effectiveness.
• Higher rates of attendance could potentially improve the program's outcomes.

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