Head of School's Office

  • Sarah Pelmas
    Interim Head of School

Sarah Pelmas

Sarah Pelmas is serving as Beaver’s Interim Head of School for the 2025–26 academic year. She brings more than 25 years of experience in independent schools as a teacher, leader, and innovator.

She spent nearly a decade as Head of School at The Winsor School and has held leadership roles at National Cathedral School in Washington, D.C., and San Francisco University High School, where she began her career as an Upper School English teacher.

A former Beaver parent (Class of 2025!), Sarah knows and loves the Beaver community. She brings warmth, energy, and a collaborative spirit to the role as she leads the school forward.

  • Zaira Santiago
    Associate Head of School for Special Projects

Zaira Santiago

  • Kathy Tarnoff
    Executive Assistant to the Head of School

Kathy Tarnoff

Beaver Country Day School admits qualified students of any race, sex, sexual orientation, gender identity or expression, religion, creed, handicap status, national origin, ethnicity, or other legally protected status to all the rights, privileges, programs, and activities generally accorded or made available to students at the school. It does not discriminate on the basis of any protected status in the administration of its educational, admission, financial aid, athletic, or other school-administered programs or policies. Privacy Policy.