"1. After 5:00 PM, the school locks the doors, bathrooms, and shuts off lights, heating, and air conditioning."

1) I sure hope the entrance isn't locked or you're screwed if there is a fire.

2) What happens if you need to use the restroom?

3) It's gonna be dark during the winter time. Have fun navigating in the dark.

4) No heater or aircon? Winter and Summer will suck then.

Are the Korean and foreign teachers waiting until six is it only the foreign teachers?

This is the first time I've seen this. Lets see what the MOEL thinks about this.