Castilleja School

In 1907, Mary Lockey opened the doors to Castilleja School to pursue a revolutionary idea—to provide young women with the educational opportunities needed to seek a college education. Now, a century later, Castilleja's mission expands beyond Mary Lockey's founding principle by educating young women to become compassionate leaders and global citizens.

Through coursework, arts, athletics, and an array of co-curricular experiences, Castilleja students become inquisitive and persevering learners. Whether in person or through distance learning, our teachers prioritize experiential and project-based learning that is engaging and relevant to girls. Castilleja's 6th through 12th grade program offers opportunities for girls across all grade levels to develop a keen sense of self and an unbridled zeal for exploration, innovation, and friendship. We are proud and humbled to bring together highly-motivated, intellectually curious young women from diverse backgrounds to collaborate within our community.

Understanding the importance of actively teaching and learning antiracism, our leadership competencies prepare Castilleja graduates to lead with compassion and insight to effect meaningful change in the world. Whether you are a prospective student, a current parent, a colleague, or an alumna, this website is designed to provide you with the news and information you need to understand who we are.

The pursuit of Castilleja’s mission is supported by a commitment to our core values, the 5Cs: Courage, Conscience, Courtesy, Charity, and Character. The 5Cs guide students towards ethical Character development. Courage is fostered, and everyone is treated with Courtesy. Conscience propels us to do the right thing, and Charity means making sacrifices to ensure that everyone shares the same rights and privileges. Each and every student, through her Castilleja education, is poised to live her life according to the 5Cs.