The roots of A Course in Wonders can be tracked back to the relationship between two individuals, Helen Schucman and William Thetford, both of whom were prominent psychologists and researchers. The course's inception happened in early 1960s when Schucman, who had been a scientific and study psychiatrist at Columbia University's School of Physicians and Surgeons, started to see a series of internal dictations. She identified these dictations as via an inner voice that recognized it self as Jesus Christ. Schucman initially resisted these activities, but with Thetford's encouragement, she started transcribing the messages she received.

Over an amount of seven decades, Schucman transcribed what might become A Class in Wonders, amounting to three volumes: the Text, the Workbook for Students, and the Manual for Teachers. The Text lays out the theoretical foundation of the course, elaborating on the primary concepts and principles. The Book for Students includes 365 lessons, one for each time of the season, designed to guide the reader via a everyday training of using the course's teachings. The Handbook for Educators gives further guidance on how to realize and train the rules of A Class in Wonders to others.

Among the main themes of A Class in Miracles is the thought of forgiveness. The program shows that correct forgiveness is the important thing to inner peace and awakening to one's divine nature. According to their teachings, forgiveness isn't only a ethical or honest acim but a basic change in perception. It involves letting go of judgments, issues, and the notion of failure, and instead, viewing the world and oneself through the lens of love and acceptance. A Program in Wonders stresses that true forgiveness contributes to the recognition that individuals are all interconnected and that divorce from each other can be an illusion.

Yet another significant part of A Class in Wonders is its metaphysical foundation. The program presents a dualistic view of truth, distinguishing involving the ego, which shows divorce, anxiety, and illusions, and the Sacred Soul, which symbolizes love, reality, and religious guidance. It implies that the pride is the source of putting up with and struggle, whilst the Holy Spirit provides a pathway to therapeutic and awakening. The target of the program is to help individuals surpass the ego's confined perception and align with the Sacred Spirit's guidance.