In this edition of the Journal, Teesson and colleagues [1] examine a popular preventive that has been criticised for having little supporting evidence. Their findings, in fact, illustrate that within Australia there are a number of school-based drug prevention programs (most commonly drug education) that focus on the more prevalent drugs (mostly alcohol, some tobacco and cannabis) that demonstrate small- to modest-effect sizes in terms of subsequent drug use. Their observation, that there is little evidence about the value of drug education regarding other drugs, is consistent with the international literature [2-4], However, even modest effects are unlikely to be of much benefit when there are '. . . few schools implementing the programs which are supported by the evidence' [1, p. 735].
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