Done by 3pm?! I donโt know where this guy was teaching but I only wish that were true for me.
I was a teacher for 12 years, and I hate this sort of rhetoric.
A teacher's day is done by 3 pm. They never work a night or weekend unless they want to. Only 180 work days per year, they're off 1/2 the time.
It's paid appropriately, but no teachers want to hear that.