Erhard Seminars Training, an organization founded by Werner H. Erhard, offered a two-weekend (60-hour) course known officially as "The est Standard Training". The purpose of est was "to transform one's ability to experience living so that the situations one had been trying to change or had been putting up with, clear up just in the process of life itself." The est training was offered from late 1971 to late 1984.
The est Standard Training was a seminar that offered a participatory experience that incorporated the Socratic method. It aimed to enable participants to shift their contextual state of mind around which their life was organized from the attempt to get satisfaction or to survive, to an experience of actually being satisfied and experiencing oneself as whole and complete in the present moment. The est training offered people the opportunity to free themselves from the past, rather than living a life enmeshed by their past. In her book, "I, Rhoda," the Emmy Awarded actress Valerie Harper reported, "Est was a wonderfully empowering experience for me. It took a lot of struggle and conflict out of my day-to-day decision-making and helped me imbue my life with more focus and intention. ... I was happier, more alive, and everything seemed lighter."
Beginning in July 1974 the est Training was delivered at the U.S. Penitentiary at Lompoc, with the approval of Federal Bureau of Prisons. Initial est training in Lompoc involved participation of 12-15 federal prisoners and outside community members within the walls of the maximum security prison and was personally conducted by Werner Erhard. Among the participants were the mayor of City of Lompoc and imprisoned political activist Matthew Landy Steen, a Weatherman convicted of federal conspiracy and bank robbery.
By 1979 est had expanded to Europe and other parts of the world. In 1980 the first est training in Israel was offered in Tel Aviv.
The last est Training was held in December 1984 in San Francisco; in its place came a newly developed course called "The Forum", which began in January 1985. The est Training presented several concepts, most notably the concept of transformation and taking responsibility for one's life. The actual teaching, called "the technology of transformation", emphasizes the value of integrity. "est, Inc." evolved into "est, an Educational Corporation", and eventually into "Werner Erhard & Associates". In 1991 the business was sold to the employees who formed a new company called Landmark Education with Erhard's brother Harry Rosenberg becoming the CEO. Landmark Education was structured as a for-profit, employee-owned company; it operates with a consulting division called Vanto Group.
In William Bartley's biography of Werner Erhard, Werner Erhard: The Transformation of a Man, the Founding of est (1978), Erhard describes his explorations of Zen Buddhism. Bartley quotes Werner Erhard as acknowledging Zen as the essential contribution that "created the space [for est]". Bartley details Erhard's connections with Zen beginning with his extensive studies with Alan Watts in the mid 1960s. Bartley quotes Erhard as acknowledging:
Of all the disciplines that I studied, practiced, learned, Zen was the essential one. It was not so much an influence on me, rather it created space. It allowed those things that were there to be there. It gave some form to my experience. And it built up in me the critical mass from which was kindled the experience that produced est.
1971 - Erhard Seminars Training Inc, first est Training held in San Francisco, California
1973 - The Foundation for the Realization of Man - incorporated as a non-profit foundation in California (subsequently the name of the foundation was changed to the est Foundation in 1976, and in 1981 to the Werner Erhard Foundation)
1975 - est, an educational corporation.
1977 - The first est Training outside of the US, in London.
Fuller, Robert W. and Wallace, Zara (1975) A Look at est in Education: Analysis, review and selected case studies of the impact of the est experience on educators and students in primary, secondary, and post-secondary education.
Green, William (1976). est: Four Days to Make Your Life Work. Pocketbooks.
Hargrave, Robert (1976). est: Making Life Work. Delacorte.
Kettle, James (1976). The est Experience. Zebra Books.
Marks, Pat R. (1976). est: the Movement and the Man. Playboy Press.
Porter & Taxson, Donald & Diane (1976). The est Experience. Universal Award House, Inc.
Self, Jane (1992). 60 Minutes and the Assassination of Werner Erhard: How America's Top Rated Television Show Was Used in an Attempt to Destroy a Man Who Was Making A Difference. Houston, Texas: Breakthru Publishing.
Articles in periodicals
"est: Communication in a Context of Compassion", by Werner Erhard and Victor Gioscia
"Being Well", by Werner Erhard, Victor Gioscia, and Ken Anbender, from Beyond Health and Normality: Explorations of Exceptional Psychological Well-Being, ed. Roger Walsh and Deane Sharpiro Jr.
Earl Babbie, "est in Prison", American Journal of Corrections, Nov.-Dec. 1977
Interview: Werner Erhard, by John Johns, PSA Magazine, May 1976 
Werner Erhard on Transformation and Productivity: An Interview, by Norman Bodek, published in Revision: The Journal of Consciousness and Change, Volume 7, Number 3, Winter 84/Spring 85 
Justin Simon, "Observations on 67 Patients who took Erhard Seminars Training", American Journal of Psychiatry, 1978, 135:686-691, 
Mark Brewerk. "We're Gonna Tear You Down and Put You Back Together", Psychology Today, August 1975
L. L. Glass, M. A. Kirsch and F. N. Parris. "Psychiatric disturbances associated with Erhard Seminars Training", American Journal of Psychiatry. 1977; 134(3): 245-7.
Peter Marin. "The New Narcissism", Harper's, October 1975, 251:45-56.
Perry Pascarella. "Create Breakthroughs in Performance by Changing the Conversation,” by Perry Pascarella. Industry Week, Vol. 233, No. 6 (June 15), 1987.
Eliezer Sobel. “This Is It: est, Twenty Years Later” (Quest Magazine, Summer 1998)
"Research on Erhard Seminar Training in a Correctional Institution" (Hosford, Ray, E., Moss, C. Scott, Cavior, Helene, & Kerish, Burton. Catalog of Selected Documents in Psychology, 1982, Manuscript #2419, American Psychological Association)
"The est Training in Prisons: A Basis for the Transformation of Corrections?" (by Mark Woodard, Baltimore Law Journal, 1982)
"Separate Realities: A Comparative Study of Estians, Psychoanalysands, and the Untreated", Rabow et al. 
"The est Experience", Adam Smith, New York Magazine, September 29, 1975 
"est Outcome Study", Robert Ornstein, Charles Swensionis, Arthur Deikman, Ralph Morris
"The Mind's Dedication to Survival" by Werner Erhard, Gilbert Guerin and Robert Shaw, published in "The Journal of Individual Psychology" 
"Breaking Out of the Box, a Crash Course in Paradigm Thinking" by Debra Feinstein, published in "Benchmark Magazine," Fall 1989
^ abBartley, William Warren, Werner Erhard: the Transformation of a Man: the Founding of est. New York: Clarkson N. Potter, Inc. 1978. ISBN 0-517-53502-5, p.164.
^Getting it - the psychology of est, by Dr. Sheridan Fenwick, p.44
^Life inc: how the world became a corporation and how to take it back, by Douglas Rushkoff
^Werner Erhard: The Transformation of a Man, The Founding of est, by WIlliam Warren Bartley, III; New York: Clarkson N. Potter, Inc. 1978. ISBN 0-517-53502-5, p. 199
^Nietzsche, Heidegger, and Buber, by Walter Kaufmann, Walter Arnold Kaufmann
^"In the course of the e s t training, you build a 'center' for yourself. Following the specifications of the trainer, you not only imagine it but go through the motions of fashioning it, standing up, stepping in one direction then another, modeling the various parts with your hands according to the image formed behind your closed eyes." -- 20 Lines A Day, p. 37