St. Mark's School educates young people for lives of leadership and service. Founded in 1865 as an intentionally small residential community, the School challenges its students to develop their particular analytic and creative capabilities by both inspiring their academic and spiritual curiosity and kindling their passion for discovery. We value cooperation over self-interest, and we encourage each person to explore his or her place in the larger world beyond our campus. St. Mark’s is a college-preparatory boarding and day school, grades nine through 12, located upon 250 acres in Southborough, Mass., just 25 miles from the cultural opportunities of Boston. The School’s outstanding faculty — 75 in number — lead 347 students through a challenging curriculum and a full program of co-curricular activities, fostering a close community. St. Mark’s engages and motivates talented students of diverse backgrounds, emphasizing excellence, character, and service to the larger community. Class size averages 10, with a student-faculty ratio of five to one. Most departments offer Advanced Placement courses, as well as independent study opportunities that have ranged in topic from building a submarine to studying ancient Latin through primary sources.
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St. Mark's School
Private schools, including parochial and boarding, are funded through tuition and fees. The cost varies from school to school, but most families pay tuition to attend them. Many private schools offer financial aid or discounts, so it's worthwhile to ask about these options.
SSAT and the average admitted student scores in the 84th percentile.
1940 Average score for the SAT Composite
Students and Faculty
Students and Faculty
Enrollment By Grade
Number of Students
St. Mark's School's
enrollment profile may offer insights into student retention rates, local population changes, real estate costs, and the accessibility of alternative educational options.
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