Dedicated to Kathleen R. Martin, one of the first women on Newton Country Day's Board of Trustees, The Martin Center increases five-fold the indoor space for dance, athletics, wellness, and fitness activities at Newton Country Day School.

The building features nearly 50,000 square feet of space including the gym with basketball and volleyball courts, the fitness room, a rowing practice room, four squash courts, the yoga, dance, and movement studio, classrooms, an athletic training room, offices and gathering spaces for students.