http://www.resnet.us/library/energy-saving-tips-schools/

https://www.ase.org/resources/design-guide-how-save-50-energy-school-buildings

https://www.populationeducation.org/content/24-ways-make-your-classroom-eco-friendly-year

https://www.theguardian.com/environment/2010/feb/12/carbonfootprints-carbon-emissions

http://www.greeneducationfoundation.org/green-building-program-sub/learn-about-green-building/11-ways-to-green-your-school.html

http://www.ecoschools.global