I'm a retired teacher. In my school system, there is no way that you can leave your job at 4 p.m. There is too much paperwork, too many outside assignments. Too many times that you had to be back at school for an event. One day we had a teachers meeting before school, another meeting after school and then an event that night. It meant that we were required to be at school from 7:30 a.m until 9 p.m. No consideration at all from admin.