On the day the teacher came up with this event as a day of self-government. On this day the students of the 10-11 or 9 classes lessons in Junior classes instead of teachers. Our school was such a day. We really had fun. All classes were fun roll call, and especially in PE, where we throw a ball and said their name. Teachers at this time in your lesson. Students (voluntary 2-3) conduct a lesson with teachers.