Around a period of eight years, Schucman transcribed what might become A Course in Wonders, amounting to three volumes: the Text, the Book for Pupils, and the Handbook for Teachers. The Text sits out the theoretical base of the course, elaborating on the key ideas and principles. The Workbook for Students contains 365 lessons, one for every time of the year, designed to steer the audience through a daily training of using the course's teachings. The Manual for Teachers gives further guidance on how best to understand and show the maxims of A Class in Miracles to others.

One of the key subjects of A Program in Wonders is the notion of forgiveness. The course shows that correct forgiveness is the key to inner peace and awakening to one's heavenly nature. In accordance with their teachings, forgiveness is not only a moral or honest training but a essential shift in perception. It involves making move of judgments, issues, and the belief  acim of sin, and alternatively, seeing the world and oneself through the lens of love and acceptance. A Class in Wonders emphasizes that correct forgiveness contributes to the recognition that we are all interconnected and that divorce from each other is an illusion.

Another significant facet of A Course in Miracles is their metaphysical foundation. The class gift suggestions a dualistic see of fact, distinguishing involving the vanity, which presents divorce, concern, and illusions, and the Holy Spirit, which symbolizes enjoy, reality, and spiritual guidance. It implies that the ego is the origin of putting up with and struggle, as the Sacred Spirit offers a pathway to healing and awakening. The target of the program is to help people transcend the ego's limited perception and align with the Sacred Spirit's guidance.

A Class in Wonders also presents the idea of miracles, which are understood as changes in understanding which come from the host to enjoy and forgiveness. Wonders, in this context, are not supernatural functions but rather activities wherever individuals see the facts in someone beyond their confidence and limitations. These activities could be equally particular and cultural, as individuals come to appreciate their divine character and the divine nature of others. Wonders are regarded as the natural outcome of exercising the course's teachings.