First Day Of School 2024 Ontario. Each year, ontario school boards must schedule 194 school days (including seven professional activity days) between september 1 and june 30, with up to 10 secondary exam days. First day of school for students is tuesday, september 3, 2024.

Second semester for secondary students begins on monday, february 3, 2025. The last day of school for secondary students is wednesday, june 25, 2025.