Our school was constructed in the 1960’s when energy was cheap and one's carbon footprint was not a concern. Students, citizens and staff drove our awareness of global warming and as a consequence we undertook the greening of our school. We insulated the windows with thermal shades, re-roofed and insulated the entire building, and installed the most up-to-date heating and cooling system available. This once old-fashioned oil-burning school has become a model of natural gas heating and cooling technology that can be controlled by our Building Supervisor on his laptop. Temperatures, airflow and Carbon Dioxide levels are monitored and controlled for health and efficiency on a daily/hourly basis. As a result, the environmental impact of the school is smaller and the building more comfortable to be in.