Yet another simple concept of A Class in Wonders may be the idea that the physical world is an illusion. It posits our physical activities are unreliable signs of truth and that true understanding can only be performed through a change in consciousness. The Course distinguishes involving the "real-world," which is really a state of peace and oneness beyond the product sphere, and the "confidence world," characterized by anxiety, divorce, and conflict. Based on ACIM, our principal purpose is always to awaken from the dream of the ego world and come back to the consciousness of our heavenly nature.

ACIM also introduces the thought of the Sacred Nature as helpful tips and instructor within the individual. This religious presence is seen as the source of enthusiasm and wisdom, helping people make acim possibilities that cause people nearer to reality and far from illusion. The Class shows that through our willingness to be controlled by the Sacred Spirit's guidance, we can access a deeper understanding of our function and the way to healing.

The Book for Students in A Class in Wonders consists of 365 classes, one for each day of the year. These classes are made to help students internalize the teachings and apply them for their day-to-day lives. They often contain meditative and contemplative workouts, affirmations, and reflections on the concepts shown in the text. The goal of these day-to-day lessons is to shift the student's perception and mind-set gradually, leading them towards a situation of correct forgiveness, internal peace, and religious awakening.

The Guide for Teachers, the third component of ACIM, is directed at those individuals who have embraced the maxims of the Program and sense required to generally share them with others. It provides guidance on the features of a genuine teacher of God, focusing qualities such as patience, confidence, and an start heart. It acknowledges the challenges and limitations one may encounter while teaching the Class and presents insights on the best way to understand them.