Delphi Schools, Inc. operates private schools that use the study methods known as Study Tech that were developed by L. Ron Hubbard. The headquarters for Delphi Schools, Inc. are located at on the property of the founding school, The Delphian School, in Yamhill County, Oregon, near Sheridan. The organization's publishing arm operates under the assumed business name of Heron Books. This is also the address where The Delphian School is located.