Think you are right to highlight this problem.  I don't think any
organisation has a policy to leave the lights on, no one thinks about
switching them off.  I know one school where some teachers take the
trouble to lock the classroom door - leaving the lights on even when
there is a sign asking teachers to switch off the lights posted on the
door.  And another school where the  premises manager walks around the
school first thing in the morning, unlocks every classroom door and
switches on the lights; he says he does it without thinking. He says
he sends money to Greenpeace every month.

I have also been to many meetings (often about climate change) where
there is a presentation and the curtains are shut. At the end of the
presentation, someone gets up and switches the lights on rather than
opening the curtains.

John