I don't know if this is true for other schools, but mine turns it off on the weekends and during vacation
Because you heater is off.
a bad thermostat or miswire of the low voltage wiring or a bad heating relay stuck in the heating mode.
Turn the heating off!
Unless it is a really old school I think most schools have gotten rid of boilers, at least here in CA. I know my school heating system was connected to a satellite that sent the message to turn on/ turn off, hot or cold to the computer in my school. My bet is that many schools are on this type of system now.
yes
Because Ethanol is flammable
Turn off heating and light in rooms that are not in use.
Turn the lights off when you leave a room.
You should turn off the light, but you should provide a different heating source at night for most species.
Yes- or turn the thermostat back.
Turn the power off and call an electrician.