Early History and Establishment of the Society - The idea of the Angle School of Orthodontia originated during a meeting of the National Dental Association in 1899. - Dr. Edward Hartley Angle had been teaching orthodontia at four different colleges. - Unable to convince dental colleges to have a separate Department in Orthodontics, Angle was approached by four individuals to teach them orthodontics in St. Louis in 1900. - The course was repeated in 1900 with additional students, establishing the first school of orthodontics. - In 1900, the class organised a society known as The Society of Orthodontists, which later became the American Association of Orthodontists. - Dr. Anna Hopkins, Angle's longtime secretary, became the first secretary of the Society. - The Society played a significant role in the development of orthodontics.

Relocation and Expansion - In 1907, the school moved from St. Louis to New York City. - Only one class graduated in New York before the school relocated again. - In 1908, the school moved to New London, Connecticut. - Classes were initially held at Munsey Building and later at the Harbor School. - In 1918, Angle purchased a Craftsman home in Pasadena, California, where the school was eventually moved.

Angle College of Orthodontia - Classes resumed in Pasadena in 1920. - Notable orthodontists such as Cecil C. Steiner, Spencer Atkinson, and George W. Hahn graduated from this class. - Dr. Anna Hopkins, known as Mother Angle, played a significant role in teaching at the school. - In 1922, the Angle Society of Orthodontics was established by the students. - The school received a charter from the State of California in 1924 and became Angle College of Orthodontia.

Notable Graduates - Albert Ketcham, Alfred Paul Rogers, Albin Oppenheim, Allan G. Brodie, Arthur Roberts. - Bernhard Weinberger, B. Frank Gray, Cecil C. Steiner, Charles A. Hawley, Charles H. Tweed. - Charles Blackmar, Charles Boyd, Copeland Shelden, Dean Harold Noyes, Ernest Martin Setzer. - F. Ishii, F. W. Rafter, Frederick C. Kemple, Frank A. Gough, Frank E. Shelden. - Frank M. Casto, Frederick Bogue Noyes, Frederick Lester Stanton, Genette Weaverling Harbour, George W. Hahn.

Miscellaneous - Dr. Anna Hopkins married Edward Hartley Angle in 1906 and became Mrs. Edward Hartley Angle. - The school moved to Pasadena, California in 1918. - The school's charter was received from the State of California in 1924.