The beginnings of A Class in Miracles can be tracked back again to the relationship between two people, Helen Schucman and William Thetford, both of whom were distinguished psychologists and researchers. The course's inception occurred in early 1960s when Schucman, who was simply a medical and study psychologist at Columbia University's School of Physicians and Surgeons, started to have a series of inner dictations. She described these dictations as coming from an inner voice that recognized itself as Jesus Christ. Schucman initially resisted these experiences, but with Thetford's encouragement, she began transcribing the communications she received.

Over a period of seven decades, Schucman transcribed what can become A Class in Wonders, amounting to three sizes: the Text, the Book for Students, and the Manual for Teachers. The Text sits out the theoretical basis of the class, elaborating on the key acim and principles. The Book for Pupils includes 365 classes, one for every single day of the year, developed to steer the reader by way of a everyday training of applying the course's teachings. The Handbook for Teachers gives further guidance on the best way to realize and show the maxims of A Course in Wonders to others.

One of the central styles of A Class in Wonders is the thought of forgiveness. The course shows that correct forgiveness is the important thing to internal peace and awareness to one's divine nature. According to its teachings, forgiveness isn't only a ethical or moral training but a simple change in perception. It involves making go of judgments, grievances, and the understanding of sin, and alternatively, seeing the entire world and oneself through the lens of enjoy and acceptance. A Class in Miracles emphasizes that correct forgiveness leads to the recognition that individuals are interconnected and that separation from one another is an illusion.

Another substantial aspect of A Class in Wonders is their metaphysical foundation. The class presents a dualistic see of truth, distinguishing involving the pride, which presents separation, anxiety, and illusions, and the Holy Soul, which symbolizes love, truth, and spiritual guidance. It suggests that the ego is the origin of enduring and conflict, while the Sacred Spirit supplies a pathway to healing and awakening. The goal of the class is to help persons transcend the ego's limited perception and align with the Holy Spirit's guidance.