Is it normal for schools in Japan to not let you in class if you are late?

I’m wondering because I live in the United States and when someone at my school is late, they are not allowed in class. I watched this one show set in Japan and this one kid for late for school and the teacher didn’t let go to class because of it and he had to wait outside of class. It is not normal for a school in the United States to not let you in class if you are late