At the graduate level, Sanger attended the Annenberg School of Communications at the University of Pennsylvania, studying documentary and biography based filmmaking.
After his Peace Corps term was completed, Sanger worked on documentary films in Ecuador, Chile and Mexico for NBC's International Zone.
[1][2][3] In 1971, Sanger was accepted as a member of the Directors Guild of America Training Program, and worked on several films shot in New York City, among which were Across 110th Street, Harry and Tonto and Next Stop, Greenwich Village.
Other films produced by Sanger include Flight of the Navigator [15] for Walt Disney Productions, The Doctor and the Devils for Twentieth Century Fox, The Producers,[16] 100 Feet, and Paraíso Travel[17][18][19][20] Among Sanger's directing credits are: Code Name: Emerald,[21] a World War II spy drama; Down Came a Blackbird[22][23] a television film for Showtime Networks, nominated for three CableACE Awards; and several movies-of-the-week for NBC, CBS and ABC.
[24][25] In the late 1980s Sanger partnered with fellow producer Jana Sue Memel to create Chanticleer Films as an umbrella company for The Discovery Program.
The mission statement of this company was to create an opportunity for film professionals (writers, editors, actors, sound mixers, cinematographers, etc.)
Warner Brothers Theatrical Ventures and Universal Music Group became producing partners, and the show made its Broadway debut in March 2010.
Sanger was named Filmmaker-in-Residence at Chapman University's Dodge College of Film And Media Arts during the Spring semester of 2010, and was made adjunct professor in 2011, teaching a course in Creative Producing.