Internationalism. Democracy. Environmentalism. Adventure. Leadership. Service. These are the pillars of Round Square, an international network of 200+ schools in 50+ countries that The Athenian School co-founded. Athenian, a grades 6-12 day and boarding independent school located on 75 acres near the rolling East Bay hills of the San Francisco Bay Area, has been living out its mission of experiential learning as a Round Square school since 1966.