Activities are offered for all grade levels Junior Pre-K through Upper School. Our introductory sports programs start at Early Childhood and our competitive sports teams start at Grade 1 through Upper School. Our goal is to provide a comprehensive list of sports and activities that IST students can choose to participate in at an early age. Our programs include a top-down structure to continue to learn and progress through each grade level and stage of completion. We aim to build program structures that are consistent, effective, and transparent.

IST competes in the Austin Private School Association (APSA) at the primary and middle school level and the Texas Charter School Academic and Athletic League (TCSAAL) at the middle and upper school level.