Abstract
In Ontario, declines in alcohol use and related measures such as heavy drinking and drinking-driving among students have occurred since 1979. Although the reasons for these declines remain unclear, over the same period the numbers of students exposed to alcohol education in schools has increased substantially. In an effort to estimate what proportion of the declines in alcohol-related behaviours among students might be due to the increase in alcohol education, we used an effect size estimate of 0.17 derived from meta-analytic studies to calculate the number of students beneficially influenced by the increase in alcohol education. The results suggested that the proportion of the declines accounted for by the increase in alcohol education was modest, but was larger for the more serious indicators of alcohol problems.