Head of School Welcome

A Message from Nanci

Dear Families,

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. 

I have spent my career in girls' education, and I am proud to carry on the legacy started by Mary Lockey. As a first-year teacher at an all-girls school, I was immediately impressed by my confident, articulate, and decisive eleven-year-old students, who had acquired strengths and skills many of us work a lifetime to master. It was then that I recognized the unique potential of an all-girls learning environment to empower young women to grow in confidence and to find their voices. From that moment on, I was determined to make excellence in single-sex education accessible to as many girls as possible.

Through coursework, arts, athletics, and an array of co-curricular experiences, Castilleja students become inquisitive and persevering learners. Teachers prioritize experiential and project-based learning that is engaging and relevant to girls. Acknowledging the importance of female mentorship, Castilleja's 6th through 12th grade program offers ample 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 and to learn from one another. Each Castilleja student graduates with the knowledge and skills to boldly and compassionately effect change in her community.

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. I invite you to explore these pages, to visit our campus, and to learn more about how we are preparing the next generation of women leaders.

Warm regards,

Nanci Z. Kauffman

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Gender and Our Brains: How New Neuroscience Explodes the Myths of the Male and Female Brains

by Gina Rippon


True belonging is the spiritual practice of believing in and belonging to yourself so deeply that you can share your most authentic self with the world and find sacredness in both being a part of something and standing alone in the wilderness.

True belonging doesn’t require you to change who you are; it requires you to be who you are.BRENE BROWN

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