GMS values and teaches the importance of being and staying healthy. Our athletics program and physical education curriculum give girls the opportunity to build skills and play sports in a supportive environment. We want to create lifelong athletes. Throughout their three years, students participate in fitness activities, learn the skills and rules of traditional sports, and explore movement through nontraditional activities like African dance, self-defense with Impact Bay Area, and skateboarding.

The school offers a comprehensive afterschool athletics program, including softball, cross-country, swimming, soccer, basketball, volleyball, and tennis. The West Bay Athletic League (WBAL) also sponsors one-time athletic events like track and field meets and golf tournaments. Our school has hosted the GMS Annual Skate Contest for more than ten years; we are proud to have the only all-girls skateboarding program and contest in the world.