Architecture design education is looking for new ways to become more efficient and adaptable to the needs of society. Intensive research is being conducted all over the world to determine how technology, specifically Extended Reality (XR), can be used in design education. The concept of Extended Reality is one of the newest developments that has gained popularity. This paper presents a theoretical model for integrating the basic concepts of XR, especially Virtual Reality (VR) and Augmented Reality (AR), with the architecture design process through the process-based studio teaching stages and the conditions of the design activity, whether it is happening in the design studio crits session or in individual design sessions. The theoretical model is developed through the examination of the architecture design process, the benefits, and previous attempts of using XR in design education. The paper presents the model key concepts, elements and potential applications and points out towards future direction of research.