The message to students used to be simple: “Just say no.”

But in today’s schools, that message is not only outdated, it may be part of the problem.

Across Canada, student substance use is a growing concern. According to the most recent national student survey, 15 per cent of students in Grades 7-12 reported vaping in the past month, and 18 per cent identified using multiple substances at the same time. Many Grade 7 students could not identify the health risks of substances they can easily access.

Schools want to respond more effectively. But many are doing so without a clear roadmap.

New standard based on evidence

A new cross-Canada standard, to be officially launched soon, aims to change that. It sets out what evidence-informed substance use prevention, education and intervention should look like from kindergarten through Grade 12 (K-12).

Rather than prescribing a single program, it provides a shared, evidence-informed framework, outlining the principles, practices and structures that are most likely to make a difference. And it’s designed to complement what provinces, territories and districts are already doing.

But the standard on its own won’t change what happens in schools. Without system-level support, even the best guidance risks sitting on a shelf.

Our national survey of more than 200 K–12 administrators highlights the gap. Nearly 90 per cent reported frequent student substance use challenges in schools, with vaping as the top concern. While almost two-thirds said they were willing to change their approach, far fewer felt they had the evidence, resources or support to do so effectively.

Without clear alternatives, many schools default to familiar responses, particularly zero-tolerance policies that can lead to suspension or expulsion — approaches that can sever........

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