The school has 51 full-time teachers: 75% hold masters or doctorate degrees. Many faculty members graduated from Ivy League schools in the United States and world-renowned universities, including Yale, Stanford, University of Notre Dame, University of California, UC Berkeley, Brown University, Tufts University, University of Notre Dame, University of Manchester, and Vassar College, the top American Liberal Arts College, etc.
Dedicated Faculty
Elite Teachers

Catherine Dauterman
Yale University

Peter St.Onge
UC Berkeley

Mike McGrath
Brown University

Kevin Keating
UCLA

Jeff Cruzan
UC Berkeley

Alastair Hunter
University of London

Mr. Frank Phillips
Head of School
Ryan Bernard
President of School
Ryan F. Bernard is a dynamic leader in private education with nearly a quarter-century of experience. He became the 43rd leader of the school July 1, 2022.
Ryan’s time at St. Mary’s started in 2010 when current president Frank Phillips hired him as a World Literature and A.P. Literature teacher. Within three years of arriving, Ryan was promoted to the school’s Academic Dean, where he worked on curriculum and scheduling, all the while remaining in the classroom with students.
By 2015, he was promoted again, assuming the role of High School Vice Principal. In this role, Ryan facilitated St. Mary’s international program, assisted in the capital campaign for additional buildings, contributed to the endowment campaign to see the school into its next chapter, and helped lead the accreditation team.
During his time at St. Mary’s, Ryan also coached sports, led pep assemblies, mentored students, and was at ground zero to implement the school’s innovative module system. Ryan is not just a leader; he is a true educator. Since his first day, he has never left the classroom, despite his growing role in the administration. As a gifted and well-loved teacher and an intellectual who isn’t afraid to think outside the box, Ryan is the authentic “every guy.”


Mrs. Sarah Guo
Dean of Academics (SMS-Boston):
Sarah Guo graduated from Boston University with her master’s degree in education. She is the co-author of four books for middle school and high school students and published several articles on education and teaching strategies. Sarah was a high school teacher for more over 16 years, and currently serves as the Dean of Academics at St. Mary’s School, Saint Raphael Campus. She has a great passion for teaching, research, and cross-culture education. Sarah enjoys working with international students and is committed to helping students thrive academically and develop a sense of personal purpose. She believes our education can and should have a transformative impact.