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

The majority (87%) of Australian school students aged 12-17 years have never used cannabis. Twelve percent have used cannabis in the past year; 7% in the past month; and 4% in the past week.

Source: Scully, M, Koh, I, Bain, E, Wakefield, M, & Durkin, S (2023). ASSAD 2022-23: Australian secondary school students' use of alcohol and other substances. Cancer Council Victoria, Australia.