How much is Commonwealth School tuition?

For 2026-27, tuition at Commonwealth School is $62,780 for all grades, per the school's website.

Does Commonwealth School require the ISEE or SSAT?

Commonwealth School requires the SSAT for applicants.

When is the Commonwealth School application deadline?

The main application deadline is January 15, 2027, and decisions are released March 10, 2027. Families apply through Ravenna.

What are Commonwealth School's average SAT scores?

Commonwealth School students averaged 1480 on the SAT (class of 2027), per the school profile.

Does Commonwealth School offer financial aid?

Yes. Commonwealth School reported $1,607,811 in financial aid to 38 students on its 2024 IRS Form 990.

How many students attend Commonwealth School?

Commonwealth School enrolls 154 students in grades 9–12, with about 4 students per teacher (NCES Private School Survey, 2023-24).

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Commonwealth School tuition & admissions

Boston, MAGrades 9–12Day, coedcommschool.org

Tuition 2026-27

$62,780

Application deadline

January 15

2027

Students

154

4 students per teacher

Admission test

SSAT

Tuition 2026-27

Grades	Day
All grades	$62,780

Financial aid: $1,607,811 to 38 students (about $42,311 each) in 2024, per the school's IRS Form 990.

How to apply

Entry grades	—
Admission test	SSAT
Interview	Required
Apply through	Ravenna
Application fee	$60
Deadline	January 15, 2027
Decisions released	March 10, 2027

College results, class of 2027

Seniors	40
Go to a 4-year college	100%
SAT (middle 50%)	1480 avg
ACT (middle 50%)	33 avg
AP courses	—
AP exams scored 3+	97%
National Merit semifinalists	—

School facts

Students	154
Teachers (full-time equivalent)	39
Students per teacher	3.9
School days per year	160
Endowment	$26,640,510 (FY2025)
Annual revenue	$11,952,659 (2024)
Head of school pay	$323,699

Where graduates went to college (2022–2026)

5 or more

Boston College, Harvard University, New York University, Northeastern University, Northwestern University, Tufts University, Univ. of Massachusetts Amherst, University of Michigan, Washington Univ. in St. Louis, Wellesley College, Yale University

From the school's college counseling profile.

Reviews from families

No reviews of Commonwealth School yet. Parents, students and alumni: yours would be the first.

Commonwealth School FAQ

How much is Commonwealth School tuition?: For 2026-27, tuition at Commonwealth School is $62,780 for all grades, per the school's website.
Does Commonwealth School require the ISEE or SSAT?: Commonwealth School requires the SSAT for applicants.
When is the Commonwealth School application deadline?: The main application deadline is January 15, 2027, and decisions are released March 10, 2027. Families apply through Ravenna.
What are Commonwealth School's average SAT scores?: Commonwealth School students averaged 1480 on the SAT (class of 2027), per the school profile.
Does Commonwealth School offer financial aid?: Yes. Commonwealth School reported $1,607,811 in financial aid to 38 students on its 2024 IRS Form 990.
How many students attend Commonwealth School?: Commonwealth School enrolls 154 students in grades 9–12, with about 4 students per teacher (NCES Private School Survey, 2023-24).

More private schools in Boston

Sources: tuition and admissions from commschool.org (checked Oct 2026); enrollment from the NCES Private School Survey 2023-24; finances from the 2024 IRS Form 990. “—” means we couldn't find it.