In recent decades, robotic systems have been used for an increasing number of applications, often involving multiple robots. Although multi-robot systems (MRS) provide benefits like redundancy, robustness, and fault tolerance, they come with numerous challenges. These challenges present new research possibilities and are of great interest to the IEEE Robotics and Automation Society (RAS). The IEEE RAS Summer School on MRS aims to gather the knowledge and expertise of the robotics community and bridge the gap between theory and practice.