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Every day at Castilleja, students, faculty, and staff work to make the Circle even greener.

As a member of the Green School Alliance, we make sustainability and conservation a priority and have pledged to:

  • Comply with all environmental regulations
  • Take steps to conserve natural resources, prevent pollution, and reduce waste

Our work is ongoing and involves initiatives to reduce paper use and waste, implement sustainable food options, and increase energy conservation.

Highlights of our work on campus:

  • In 2013-2014 the school garden at Castilleja produced 100 lbs. of produce that were used in the Castilleja Kitchen for school meals.  These included: Collard Greens, Swiss Chard, New Zealand Spinach, Mustard Greens, Mizuna, Lettuce, Basil.
  • Two 50 gallon water catchment barrels were added to the downspouts of our Arts Building in order to save water for the 'Singing Garden' when our Winter and Spring rains arrive.
  • Students from our Engineering Sustainable Solutions class have started designing the plans for a native pollinator garden that will help to increase Bio-Diversity on our campus with plants and animals that are native to our area.  Each plant will also have drought-tolerant qualities that will minimize our need for irrigation.
  • The student-led Green Team put together a full week of eco-conscious activities to honor Earth Week and raise awareness about what individuals can do to lessen their environmental impact. Highlights included a "trash-ion" show, bike-to-school contest, locavore farmer's market, green gadget fair, and planting new seedlings in the organic garden.
  • The City of Palo Alto's new waste management program has proven to be a boon for Castilleja and new receptacles around campus have made it easy to compost and recycle. We have reduced our trash from five loads per week to three!
  • We began printing our alumnae magazine, full circle, on recycled (and recyclable) paper and at a green certified facility. As a result we saved: 8 fully grown trees, 3,466 gallons of water, 6M BTUs of energy, 384 pounds of solid waste, and 755 pounds of greenhouse gasses.


Castilleja hosted GSA Northern California Green Conference 2014: Green Business. Students, teachers, activists and innovators gathered for an amazing day of workshops and speakers and plenty of time for collaboration!

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