Selected students monitor their building each day during the times of the day that students might be out of their classrooms. Energy Rangers hope to find unused rooms dark and quiet, with as little resources used as possible. They dislike energy and water waste and make sure that lights and other equipment are turned off when not needed. However, they do turn off lights, overhead projectors, radios, and other electrical devices that are left on even when the classroom is unoccupied. They leave gentle reminders with those forgetting to be conservation minded and positive words of encouragement to those who do a good job of using our resources wisely. They keep careful records to document progress and they recognize those classrooms who continue to do well.