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Intentionally Small,

Thinking Big.

St. Mark's School is a coeducational, Episcopal, preparatory school, situated on 210 acres in Southborough, Massachusetts, 25 miles from Boston.

Why St. Mark’s?

St. Mark’s intentionally small, intellectually vibrant community encourages students to think big. During their time at St. Mark’s, students develop a spirit of independence, innovation, and discovery, preparing them to lead lives of consequence.

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Intellectual Curiosity

A student raises a robot in the air to study it.


Our challenging curriculum fosters independent thinking and builds intellectual confidence. 

Global Citizenship


The St. Mark’s Global Citizenship Program provides immersive experiences locally, nationally, and across the globe, helping students appreciate cultural differences and prepare for life beyond St. Mark’s.

Experiential Learning


St. Markers learn by doing in our Experiential Learning programs, in which students build skills in hands-on learning and collaboration while gaining real-world experience. 

Episcopal Identity


St. Mark’s identity as an Episcopal school is directly related to core values including the importance of spiritual reflection and the intentional teaching of wisdom, compassion, and humility. 

Leadership and Service


St. Mark’s provides students with a wide range of service opportunities, both locally and globally, to make a positive impact on the lives of others. 

Community and Equity


When students have spaces to embrace and explore their identities safely and with the encouragement of those who understand the challenges they face, they are better prepared to succeed academically, socially, and professionally.

St. Mark’s at a Glance






Student : faculty ratio


Acre campus



Average class size



Miles west of Boston


Million in financial aid awarded in 2022


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