Around a period of eight years, Schucman transcribed what would become A Program in Wonders, amounting to three volumes: the Text, the Book for Pupils, and the Handbook for Teachers. The Text lays out the theoretical foundation of the class, elaborating on the primary methods and principles. The Workbook for Pupils contains 365 classes, one for every day of the season, designed to steer the audience through a daily exercise of using the course's teachings. The Information for Educators gives further guidance on the best way to understand and train the rules of A Course in Miracles to others.

One of many key subjects of A Program in Wonders is the idea of forgiveness. The program teaches that true forgiveness is the key to inner peace and awareness to one's divine nature. Based on their teachings, forgiveness is not only a ethical or moral exercise but a basic change in perception. It involves making go of judgments, issues, and the understanding a course in miracles of crime, and instead, seeing the planet and oneself through the contact of love and acceptance. A Program in Miracles highlights that correct forgiveness leads to the recognition that we are all interconnected and that separation from each other is an illusion.

Another substantial aspect of A Program in Miracles is their metaphysical foundation. The course gifts a dualistic view of reality, distinguishing involving the vanity, which presents divorce, anxiety, and illusions, and the Holy Nature, which symbolizes enjoy, reality, and religious guidance. It suggests that the pride is the origin of enduring and struggle, as the Holy Soul provides a pathway to therapeutic and awakening. The goal of the program is to help people surpass the ego's confined perspective and arrange with the Sacred Spirit's guidance.

A Class in Miracles also introduces the thought of wonders, which are understood as shifts in understanding which come from a host to enjoy and forgiveness. Wonders, in that context, are not supernatural events but instead activities wherever individuals see the facts in someone beyond their ego and limitations. These experiences can be both personal and cultural, as persons come to appreciate their heavenly nature and the heavenly character of others. Miracles are seen as the organic outcome of exercising the course's teachings.