Sydney Morning Herald: Andy Best threw out a challenge to his students to save electricity around the school, promising he would plough any savings into the school’s Eco Kids organisation. “And why don’t you be a light monitor at home and ask Mum and Dad for a raise in your pocket money if you save money on power?” the school principal added for good measure. “The next day a parent stopped me and said, `Last night we were only allowed to have one light on at home because of you,’ ” Best …