The school offers a variety of clubs and activities. Considerable responsibility is vested in the Student Government and class officers. Student publications include a literary magazine and a yearbook. Unique programs include community service projects, a Model United Nations program, and field trips that capitalize on the historical, cultural, and biological assets of the Charleston area. Each student has a faculty advisor who promotes communication between parents and the school.
Advisors monitor the students' academic progress.
The school offers an athletic program for boys and girls in Middle and Upper Schools including soccer, tennis, golf, cheerleading, football, volleyball, basketball, baseball and softball. The Lower School conducts a comprehensive physical education program. Admission Admission is based on previous school records, recommendations from both English and mathematics teachers, an entrance test, and interviews. Sea Island Academy welcomes all qualified students regardless of race or ethnic origin.