How much is tuition at St. Mark's School?

At St. Mark's School, boarding tuition is $82,300 per year and day tuition is $66,700 per year (2026-2027). The figure comes from the school's own published tuition page.

Does St. Mark's School offer financial aid?

Yes. 40% of students at St. Mark's School receive financial aid (2026-2027). Award sizes vary by family income and assets, so the published tuition is not what every family pays.

What grades does St. Mark's School serve?

St. Mark's School serves grades 9-12.

Is St. Mark's School a boarding or day school?

St. Mark's School offers both boarding and day enrollment. It is coeducational.

How many students attend St. Mark's School?

St. Mark's School enrolls about 360 students.

Where is St. Mark's School located?

St. Mark's School is located in Southborough, Massachusetts.

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both

coed

9-12

St. Mark's School

Southborough, Massachusetts

Financials

Source year 2026-2027 · Tuition source · Verified August 13, 2026

Day tuition (2026-2027)

$66,700

Boarding tuition (2026-2027)

$82,300

Financial aid

40% of students

Enrollment

360

Student:Teacher

6:1

Founded

1865

Can you actually afford this? Claire works out what St. Mark's School costs your family after aid — and whether it fits your child.

What St. Mark's School actually costs

Estimates — verify with the school

Published tuition is only part of the picture. This projection adds the costs families actually pay (tuition source year 2026-2027), with ~4%/yr tuition inflation.

Program

Distance from home

Years attending

Expected financial aid0% of tuition

40% of students at this school receive aid. Use the school's net price calculator for your family's real number.

Year 1 real cost

$91,000

vs $82,300 published tuition

4-year total

$385,882

incl. $36,398 beyond tuition

Hidden costs per year

Books, laptop & course materials$800
Athletics gear & team fees$900
Activities, trips & event fees$1,200
Travel home & breaks$2,000
Dorm setup & storage$400
Spending money & incidentals$2,400
Health & student fees$1,000

About

St. Mark's School is a co-ed boarding and day school in Southborough, Massachusetts with a long-standing rivalry with Groton School dating to 1886. Known for academic rigor, strong arts, and a close residential community with consistent placement at highly selective colleges.

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Common questions

How much is tuition at St. Mark's School?: At St. Mark's School, boarding tuition is $82,300 per year and day tuition is $66,700 per year (2026-2027). The figure comes from the school's own published tuition page.
Does St. Mark's School offer financial aid?: Yes. 40% of students at St. Mark's School receive financial aid (2026-2027). Award sizes vary by family income and assets, so the published tuition is not what every family pays.
What grades does St. Mark's School serve?: St. Mark's School serves grades 9-12.
Is St. Mark's School a boarding or day school?: St. Mark's School offers both boarding and day enrollment. It is coeducational.
How many students attend St. Mark's School?: St. Mark's School enrolls about 360 students.
Where is St. Mark's School located?: St. Mark's School is located in Southborough, Massachusetts.

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