When a study permit is required
Foreign nationals are required to obtain a study permit for engaging in academic, professional, vocational or other education or training that is more than 6 months in duration at a designated learning institution (DLI) in Canada.
The following activities are not considered studies for the purposes of the Immigration and Refugee Protection Act (IRPA) and do not require a study permit:
pre-school (pre-kindergarten)
courses of general interest or self-improvement
distance learning
audited courses (typically by sitting in on an academic course, but without obtaining credit for it, or having the ability to obtain credit for it retroactively)
www.canada.ca/en/immigration-refugees-citizenship/corporate/publications-manuals/operational-bulletins-manuals/temporary-residents/study-permits/who-needs-study-permit.html