When Is Back To School 2025 Canada. Last day of school for students: The school year in ontario typically begins in early september and ends in late june, covering approximately 194 instructional days.
An information release issued by the minister of education and early childhood development listing the significant dates, including first and last day of school, holidays and breaks, etc. School year calendars are approved by the ministry of education typically around the 3rd week of may of the preceding school year.