All international students must have medical insurance for themselves and their accompanying dependents and must always keep this insurance valid for the duration of their education in Quebec. If you are not provided insurance from your college/university, you could buy it privately at Policystore.ca or any licensed company. Check out the Quebec Immigration website, https://www.immigration-quebec.gouv.qc.ca/en/immigrate-settle/students/temporary-settlement/health-insurance.html, for more information.