Crow Island School in Winnetka, Illinois, is an elementary school operated by Winnetka Public Schools. It is significant for its progressive philosophy and its International Style architecture. The design of its building was a collaboration between the Chicago firm of Perkins, Wheeler and Will and Eliel and Eero Saarinen. It currently serves kindergarten through fourth grade students. The school was established in 1940-41. Sebastian Hinton's prototype "jungle gym" is located here, having been moved from Horace Mann School in 1940. The school was awarded the Twenty-five Year Award by the American Institute of Architects in 1971. It was declared a National Historic Landmark in 1990. In celebration of the 2018 Illinois Bicentennial, Crow Island School was selected as one of the Illinois 200 G