Yet another fundamental theory of A Class in Miracles may be the indisputable fact that the bodily world can be an illusion. It posits our physical experiences are unreliable indications of reality and that true understanding can only be performed by way of a change in consciousness. The Course distinguishes between the "real life," which is really a state of peace and oneness beyond the substance kingdom, and the "pride earth," indicated by anxiety, separation, and conflict. According to ACIM, our main function would be to awaken from the desire of the pride world and go back to the recognition of our heavenly nature.

ACIM also introduces the notion of the Sacred Heart as a guide and teacher within the individual. This spiritual presence is observed as the origin of enthusiasm and a course in miracles  , helping us make choices that cause us nearer to truth and far from illusion. The Program teaches that through our readiness to hear the Sacred Spirit's advice, we could entry a deeper comprehension of our purpose and the road to healing.

The Workbook for Pupils in A Class in Miracles includes 365 classes, one for each time of the year. These classes are made to help pupils internalize the teachings and use them to their day-to-day lives. They frequently include meditative and contemplative exercises, affirmations, and insights on the ideas presented in the text. The purpose of these day-to-day classes would be to change the student's understanding and mind-set slowly, major them towards circumstances of correct forgiveness, inner peace, and religious awakening.

The Manual for Educators, the 3rd component of ACIM, is directed at those individuals who have embraced the rules of the Course and sense forced to generally share them with others. It provides guidance on the characteristics of a genuine instructor of Lord, emphasizing features such as for instance persistence, confidence, and an open heart. It acknowledges the difficulties and limitations one may experience while training the Class and presents ideas on how best to understand them.