Stamford is a member school of the Southeast Asia Student Activities Conference (SEASAC), an elite Sports and Co-Curricular Activities league with a total of 16 member schools in the region. SEASAC activities include arts, badminton, basketball, cross-country, golf, gymnastics, Model United Nations (MUN), soccer, swimming, rugby, touch rugby, softball, tennis, and volleyball. SEASAC provides opportunities for students to travel and represent Stamford around the region as well as gives our school the honor to host SEASAC events. In 2019-2020, SAIS hosted SEASAC Volleyball where the Lions Girls were promoted into Division 1!