The printer for A Course in Miracles, Coleman Graphics, Inc., publishes over 50 additional book titles, most of them written by students of the Course who have incorporated Course philosophy into their writings. One influential example is psychologist Kenneth Wapnick’s book, Christian Psychology in A Course in Miracles. Wapnick, a Jewish convert to Roman Catholicism, has apparently devoted his life to spreading the good news of the Course. His "Foundation for a Course in Miracles" in Roscoe, New York, has published six books on the Course that attempt to show its supposed relevance to Christian belief and practice.

According to New Realities magazine, even a brief, partial listing of the organizations who recommend the Course to their constituents, or who have incorporated it into their curriculum, is impressive: est (The Forum); the Association for Humanistic Psychology; the Center for Attitudinal Healing; the Association for Research and Enlightenment (Edgar Cayce); the Spiritual Frontiers Fellowship (founded by famous trance medium Arthur Ford); the Association for Transpersonal Psychology; the Institute of Noetic (consciousness) Sciences; Stuart Emery’s Actualizations seminar.2 From university presidents (such as Glen Olds, former president of Kent State University) to owners of football teams—to "various researchers and authors that read like a ‘who’s who’ of the consciousness movement",3 the Course continues to expand in popularity. Psychic researcher Willis Harmon, head of the Institute of Noetic Sciences, has called it "the most important book in the English language".4

Also, scores of individuals in numerous occupations have incorporated Course teachings into their professions. New Age pianist Steven Halpern has set material from the Course to music. Michael Stillwater has used its concepts for gardening in his A Course in Marigolds. Centerlink, Inc., has even put the Course on computer disk.

In light of its sales, the number of its teachers, and its indirect influence through other mediums, a conservative estimate would be that at least five million people have been exposed to the Course teachings. For example, prominent New Ager Marianne Williamson is author of the million-copy bestseller, A Return to Love: Reflections on the Principles of A Course in Miracles (Harper-Collins, 1992), which is heavily based on the Course. Her promotions of the Course on TV are also numerous. Popular TV host Oprah Winfrey was so enthralled with Williamson’s book that she bought a thousand copies for her friends and others, many of noted influence.5

Influential psychiatrist Gerald Jampolsky also extols Course virtues throughout the country, in his lectures and books. He has appeared on the "Phil Donahue Show," "Today," and "60 Minutes." Robert Schuller has hosted Jampolsky at his famous Garden Grove Community Church.6 Jampolsky’s bestselling books, There Is a Rainbow Behind Every Cloud, Good-bye to Guilt, Out of Darkness into the Light, Love Is Letting Go of Fear, Teach Only Love, and Children as Teachers of Peace condense basic themes of the Course. His Center for Attitudinal Healing was founded in 1975 under the direction of an "inner voice," which instructed him to establish a center where the principles of the Course could be taught and demonstrated.

Jampolsky’s Teach Only Love asserts that the Course is "central to attitudinal healing".7 In Good-Bye to Guilt he describes his conversion to the Course and its relation to the Center:

He explains that the Course itself is not used at the Center (the full Course program requires a minimum of a year to complete); however, the staff are expected to "adopt and demonstrate the principles of attitudinal healing" taught by the Course.9

The Christian church has also been influenced by the Course. "Evangelical" Christians, such as author and lesbianism supporter Virginia Mollenkott, in Speech, Silence, Action, attest to its alleged benefits in their lives.10 Some mainline churches use it as part of their educational programs, because it has received glowing endorsements by numerous Catholic and Protestant clergy.

In fact, the Course specifically commends itself toward acceptance within the Christian church. For example, its spirit author claims to be "Jesus Christ" Himself; and distinctively Christian terminology is utilized throughout. SCP [Spiritual Counterfeits Project] researcher Robert Burroughs observes:

Of course, other non-Christian spiritistic writings have these themes, i.e., 1) the biblical God or Jesus is the alleged author, 2) spiritistic contact in one form or another is encouraged, and 3) a claim to be a message for the Church (e.g., medium Levi M. Arnold’s History of the Origin of All Things 12; the occult Oahspe: A Kosmon Bible 13; A.J. Russell’s (ed.) God Calling.14 In each case new revelations seek to revise and discredit biblical teachings, usually through sophisticated-sounding spiritual explanations and methods.

Nevertheless, in all such revelations, "God" denies His earlier teachings in Scripture.15