Написать про ЛЮБУЮ школьную традицию на английском языке. Больше 7 предложений

Our school has many traditions. I want to tell you about one of them. Our classes starts at half past eight but the pupils must be in school not late then quarter past eight. Every day before classes we have to be in the yard of our school and do morning exercises for ten minutes. It is called warm up. And after that we go to the classrooms and get ready for the lessons. At half past eight our classes begin.