Social Architecture: Theory and Practice aims to equip the students with theoretical/historical knowledge of ‘Social Architecture’ as well as practical skills for practicing it. This year we were fortunate to tap on a relatively new global network, Design for the Common Good (DCG), to invite external guests to join our class and share their experience with us. Launched in 2017, DCG is a network of networks that is currently composed of five independent networks: Social Economic Environmental Design (SEED) Network, DesignBuildXchange Network, Live Projects Network, Pacific Rim Community Design Network, and Curry Stone Foundation. Students were tasked to conduct case studies of exemplary design projects under each of the member network, and to identify how these projects help to strengthen the uniqueness of each network, while at the same time contribute to the common mission of DCG - to connect and pool together international resources and expertise relating to the practice of design for the common good.