The sources of A Class in Wonders could be tracked back once again to the venture between two persons, Helen Schucman and Bill Thetford, equally of whom were distinguished psychologists and researchers. The course's inception occurred in the early 1960s when Schucman, who was a clinical and study psychologist at Columbia University's School of Physicians and Surgeons, started to have a series of inner dictations. She identified these dictations as coming from an internal style that discovered itself as Jesus Christ. Schucman initially resisted these activities, but with Thetford's support, she began transcribing the messages she received.

Around a period of seven decades, Schucman transcribed what can become A Program in Wonders, amounting to three volumes: the Text, the Book for Students, and the Information for Teachers. The Text sits out the theoretical foundation of the class, elaborating on the the christ  core ideas and principles. The Workbook for Pupils includes 365 lessons, one for every time of the year, developed to guide the reader by way of a everyday training of applying the course's teachings. The Guide for Teachers offers more guidance on the best way to understand and show the rules of A Program in Wonders to others.

Among the main themes of A Course in Miracles is the notion of forgiveness. The course teaches that correct forgiveness is the main element to internal peace and awareness to one's heavenly nature. According to its teachings, forgiveness is not merely a moral or moral training but a fundamental shift in perception. It involves making get of judgments, grievances, and the understanding of failure, and alternatively, viewing the planet and oneself through the contact of enjoy and acceptance. A Course in Wonders highlights that true forgiveness leads to the acceptance that people are typical interconnected and that separation from each other is an illusion.

Yet another substantial part of A Class in Miracles is its metaphysical foundation. The program presents a dualistic view of reality, distinguishing between the vanity, which presents divorce, fear, and illusions, and the Sacred Soul, which symbolizes love, reality, and religious guidance. It implies that the ego is the origin of enduring and conflict, whilst the Sacred Soul offers a pathway to healing and awakening. The goal of the course is to greatly help individuals surpass the ego's limited perception and align with the Sacred Spirit's guidance.