https://osap.gov.on.ca/AidEstimatorWeb/enterapp/enter.xhtmlStudents may continue to attend high school until the ages of 19 to 21 (the cut-off age for high school varies between provinces). Those 19 and over may attend adult school. Students of high school age who have received long-term suspensions or have been expelled, or are otherwise unable or unwilling to attend conventional schools may be offered alternative learning options to complete their secondary education, such as drop-in programs, night school, or distance/online classes.