Toronto District School Board (TDSB) has released a plan for a return to school in September, which includes all students attending in-person classes five days a week.The TDSB’s plan follows the release of back-to-school requirements by the provincial government on Thursday.Under the plan, which still needs approval from the Ministry of Education, secondary students would attend classes for half of the instructional day, five days per week, and would have four semesters in the school year.Class sizes would be approximately fifteen students for every teacher.