My school, being an environmental school, is involved in all kinds of green challenges. There is one very large challenge called "Dream in Green" and I am on the committee for this one. Our school is equipped with lighting that turns off in the hallways when there isn't any movement. It also turns off after you leave the classroom for a while, but the electricity is still flowing through the circuit. We decided to make "warning" posters to place near all of the light switches in the buildings (classrooms, bathrooms, etc.). Here is what our school will be using, I hope you can use it too. There are four to a page to make for less waste, just cut and laminate.