KW Johnson et. al, 2009.
This study tests for the efficacy of a school-based drug prevention curriculum (Think Smart) that was designed to reduce use of Harmful Legal Products (HLPs, such as inhalants and over-the-counter drugs), alcohol, tobacco, and other drugs among fifth- and sixth-grade students in frontier Alaska.
Full article available at: http://link.springer.com/article/10.1007/s11121-009-0132-2
Knowlton W. Johnson, Stephen R. Shamblen, Kristen A. Ogilvie, David Collins, Brian Saylor
Prevention Science, December 2009, Volume 10, Issue 4, pp 298-312.