First envisioned on World Environment Day, June 5, 2007, the GSA was created in response to Mayor Bloomberg’s challenge to New York City institutions to reduce their carbon footprint 30% by 2030. On October 11, 2007, hosted by the Allen-Stevenson School, forty six schools gathered to explore Climate Change and What Schools Can So About It. The Green Schools Leadership Commitment was first introduced to 21c environmental challenges through integrated sustainable and energy-smart solutions and, with support from The Mayor’s Office of Long Term Planning and Sustainability, the National Association of Independent Schools (NAIS), the National Business Officers Association (NBOA), and other local, state, national and global resource partners, the GSA was launched.