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Ontario Student Drug Use and Health Survey Centre for Addiction
and Mental Health

Ontario Student Drug Use and Health Survey

See an interactive infographic of highlights from the 2015 OSDUHS

Download the 2015 OSDUHS Drug Use Report

The Ontario Student Drug Use and Health Survey (OSDUHS) is a population survey of Ontario students in grades 7 through 12. The OSDUHS began in 1977 and is the longest ongoing school survey in Canada, and one of the longest in the world. This self-administered, anonymous survey is conducted across the province every two years with the purpose of identifying epidemiological trends in student drug use, mental health, physical health, gambling, bullying, and other risk behaviours, as well as identifying risk and protective factors. Typically, the OSDUHS surveys thousands of students in over 150 elementary and secondary schools across Ontario. The survey sample is considered representative of all students in grades 7-12 in publicly funded schools in Ontario (just under one million students).

This survey is important because it provides current and reliable information about the health risk behaviours, attitudes and beliefs of Ontario adolescents, and tracks changes over time. Findings from the OSDUHS have been widely used by health, education, and government officials in setting health priorities and facilitating preventative policies, programs and services that address youths' needs. 

The OSDUHS began as a drug use survey in 1977, but is now a broader study of adolescent health and well-being. Topics covered include tobacco, alcohol and other drug use and harmful consequences of use, mental health indicators, physical health indicators, health care utilization, body image, gambling and video gaming behaviours and problems, violence and bullying, criminal behaviours, school connectedness, and family life.

The 2015 drug use report is now available to download (see below). The 2015 mental health and well-being report will be released in the summer of 2016. New topics in the 2015 survey cycle included the use of various types of electronic cigarettes, source of cannabis, hours of sleep on school nights, going to bed or school hungry, elevated stress, and symptoms of ADHD.

To learn more about the OSDUHS, please see our Frequently Asked Questions (FAQs) page.

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​2015 OSDUHS Drug Use Report 

Drug use findings from the 2015 OSDUHS are available to download. New topics in the 2015 report include the use of electronic cigarettes in the past year, the use of cannabis oil/liquid in an electronic cigarette in the past year, and usual source of cannabis. 

For PowerPoint slides showing the findings from the 2015 OSDUHS drug use report, please email Angela Boak.

2013 OSDUHS Mental Health and Well-Being Report 

Mental health and well-being findings from the 2013 OSDUHS are available to download. New topics in the 2013 report include tanning bed use, bicycle helmet use, and texting while driving.

​2015 OSDUHS Questionnaire

There are four English versions of the 2015 OSDUHS questionnaire:  two versions (Form A and Form B) designed for 7th and 8th graders in elementary/middle schools, and two versions (Form A and Form B) designed for 9th to 12th graders in secondary schools.  Both Form A questionnaires are available in French. Click below for the 2015 OSDUHS English and French questionnaires.



 OSDUHS Pamphlet




In this video series, CAMH's Dr. Hayley Hamilton outlines key findings from the 2013 OSDUHS.

Video 1 introduces the OSDUHS, how the results are used and key findings.

Video 2 discusses findings on mental health, including self-esteem, suicide and mental health supports.

Video 3 provides findings on general well-being, including body image, drug use and bullying.

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