Each class has an Eco-Champion who will also take on the 'energy monitor' role - their jobs include making sure lights are off when no-one is in classroom (such as PE, Music lessons or even for a 15 minute assembly). With permission, they will turn screen off at the end of the day and make sure you plugs are left switched on. Older students will check wider school rooms (library, halls) to make sure their lights are off when unoccupied.