The least efficient schools use three times more energy than the best energy performers. By partnering with the highly successful ENERGY STAR for K-12 School Districts and using Portfolio Manager to track and rate the energy performance of your portfolio of school buildings, school districts can serve as environmental leaders in their community, become energy efficient, reduce greenhouse gas emissions, and save money! If you're considering a new building, EPA's voluntary School Siting Guidelines can provide tips for reducing climate and health impacts.