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 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. It was incorporated in 1973 as the Delphi Foundation, and changed to the present name in 1987. Delphi Schools says that its schools teach using "The Delphi Program", which "is a unique, integrated approach to learning." The Study Technology is licensed through the Scientology related group Applied Scholastics. Several Delphi schools use the Heron Basics P