[1] He has written several works, including the Essentials of Screenwriting, published in June 2010,[2][3] and the novels Escape from Film School and Barry and the Persuasions.

He has written numerous feature assignments for the major studios and has sold material to all of the Big Three television networks.

He has conducted master classes in London, Paris, Jerusalem, Madrid, Rio de Janeiro, Mexico City, Beijing and Hong Kong.

Walter is also a pop culture critic and media pundit on entertainment history-related topics, such as anti-Americanism and Hollywood,[4] screenwriting as a career,[5] film production[6] and politics.

[10][11] Students from Walter’s screenwriting program at UCLA have written projects for Steven Spielberg, and many successful Hollywood productions,[12] including three Academy Awards for best screenplay: Dustin Lance Black for Milk and Alexander Payne for Sideways and The Descendants.