What proportion of Australian school students aged 12-17 years have used cannabis?

The majority (83%) of Australian school students aged 12-17 years have never used cannabis. Fifteen percent have used cannabis in the past year; 8% in the past month; and 5% in the past week.

Source: Cancer Council Victoria. (2018). Australian secondary school students' use of tobacco, alcohol, over-the-counter drugs and illicit substances in 2017.

Please note: The proportion of school students who have used cannabis in the past year, past month, and past week differs from the proportion of youth in the general population who have used cannabis in the past 12 months, past month, and past week (see FAQ: What proportion of Australians in the general population aged 12-17 years has used cannabis?). These differences may be due to differences in survey measures.  In the Australian Secondary School Students’ Alcohol and Drug (ASSAD) survey, respondents are asked about their frequency of use (none to 40 times or more) in the past year, past month, and past week. In the general population survey (National Drug Strategy Household Survey), respondents are simply asked if they had used cannabis in the past 12 months, past month, or past week.