SummaryThe purpose of the present paper was to examine firstly the distribution of THC consumption among an aggregate sample of 4737 students from Ontario, Canada, and secondly the assumption of log‐normality. With respect to the estimation of THC consumption the following was indicated: per capita consumption was estimated to be 310 mg; males consumed significantly more than did females; and consumption was curvilinearly related to age of student. In contrast to earlier findings, the assumption of log‐normality was not met. The preventative implications of the log‐normal distribution are indeed important, not only with respect to alcohol but also to other substance use and therefore require further res