How much is St. Sebastian's School tuition?

For 2026-27, tuition at St. Sebastian's School is $66,800 for grades 7-12, per the school's website.

Does St. Sebastian's School require the ISEE or SSAT?

It depends on the grade: the ISEE for grades 7-8; the SSAT for grades 9-12.

When is the St. Sebastian's School application deadline?

The main application deadline is February 1, 2027, and decisions are released March 10, 2027. Families apply through Ravenna.

How many students attend St. Sebastian's School?

St. Sebastian's School enrolls 388 students in grades 7–12, with about 5 students per teacher (NCES Private School Survey, 2023-24).

All private schools

St. Sebastian's School tuition & admissions

Needham, MAGrades 7–12Day, boysReligious affiliation

Tuition 2026-27

$66,800

Application deadline

February 1

2027

Students

388

5 students per teacher

Admission test

Varies by grade

Tuition 2026-27

Grades	Day
7-12	$66,800

How to apply

Entry grades	7, 8, 9, 10, 11, 12
Admission test, grades 7-8	ISEE
Admission test, grades 9-12	SSAT
Interview	Required
Apply through	Ravenna
Application fee	$50
Deadline	February 1, 2027
Decisions released	March 10, 2027

College results, class of 2027

Seniors	65
Go to a 4-year college	100%
SAT (middle 50%)	—
ACT (middle 50%)	—
AP courses	20
AP exams scored 3+	—
National Merit semifinalists	—

School facts

Students	388
Teachers (full-time equivalent)	75
Students per teacher	5.2
School days per year	160
Endowment	—
Annual revenue	—
Head of school pay	—

Where graduates went to college (Classes of 2022-2026)

10 or more graduates

Boston College, College of the Holy Cross, Georgetown University, Harvard University, Providence College, Villanova University

5 to 9 graduates

Boston University, Brown University, Colby College, Duke University, Fairfield University, Fordham University, Middlebury College, Northeastern University, Trinity College, Tufts University, United States Military Academy, University of Michigan, University of Notre Dame, University of Richmond, University of Virginia, Wake Forest University

At least one graduate

American International College, Amherst College, Anna Maria College, Babson College, Bates College, Baylor University, Bentley University, Bowdoin College, Bucknell University, Claremont McKenna College, Clark University, Clarkson University, Clemson University, Colgate University, College of Charleston, Colorado College, Cornell University, Culinary Institute of America, Dartmouth College, Dickinson College, Emerson College, Emory University, Gordon State College, Holy Cross College, Howard University, Indiana University, Johns Hopkins University, Lafayette College, Lehigh University, Merrimack College, Miami University, Morehouse College, Northwestern University, Pitzer College, Princeton University, Purdue University, Rensselaer Polytechnic Institute, Seton Hall University, Siena University, Skidmore College, Southern Methodist University, Springfield College, St. Lawrence University, Suffolk University, Syracuse University, Texas Christian University, The Catholic University of America, The University of Edinburgh, Tulane University, Union College, University of California (Los Angeles), University of Denver, University of Georgia, University of Louisville, University of Maryland, University of Massachusetts (Amherst), University of Miami, University of Pennsylvania, University of Southern California, University of Tennessee, University of Vermont, University of Wisconsin, Vanderbilt University, Vassar College, Washington University in St. Louis, Western Connecticut State University, Worcester Polytechnic Institute, Xavier University, Yale University

From the school's college counseling profile.

Reviews from families

No reviews of St. Sebastian's School yet. Parents, students and alumni: yours would be the first.

St. Sebastian's School FAQ

How much is St. Sebastian's School tuition?: For 2026-27, tuition at St. Sebastian's School is $66,800 for grades 7-12, per the school's website.
Does St. Sebastian's School require the ISEE or SSAT?: It depends on the grade: the ISEE for grades 7-8; the SSAT for grades 9-12.
When is the St. Sebastian's School application deadline?: The main application deadline is February 1, 2027, and decisions are released March 10, 2027. Families apply through Ravenna.
How many students attend St. Sebastian's School?: St. Sebastian's School enrolls 388 students in grades 7–12, with about 5 students per teacher (NCES Private School Survey, 2023-24).

More private schools in Boston

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