Is private school cheaper in Boston or St. Louis?

St. Louis has lower average private school tuition at $13,000/year vs $36,800/year in Boston. That's $23,800/year less, or $309,400 over a K-12 career.

How much can I save on private school by choosing St. Louis over Boston?

Average tuition in St. Louis is $23,800/year less than Boston. Over 13 years (K-12), that's $309,400 per child. Religious schools are the most affordable option in both cities: $18,500/year in Boston, $8,400/year in St. Louis.

How do Boston and St. Louis private school costs compare to the national average?

The national average private school tuition is $12,350/year. Boston averages $36,800/year ($24,450 above average). St. Louis averages $13,000/year ($650 above average).

Private School Cost: Boston vs St. Louis

St. Louis averages $23,800/year less for private school (183% cheaper). Over K-12, that's $309,400 per child.

Bottom Line

St. Louis is the cheaper city for private school. Average tuition: $13,000/year vs $36,800/year in Boston. Religious schools run $8,400/year on the low end.

Boston

$36,800

avg tuition/year

$24,450 above national avg

St. Louis

$13,000

avg tuition/year

$650 above national avg

Lower cost

Tuition by School Type & Grade

Category	Boston	St. Louis	Difference
All Schools (Average)	$36,800/yr	$13,000/yr	+$23,800
Religious Schools	$18,500/yr	$8,400/yr	+$10,100
Independent/Prep	$56,000/yr	$24,500/yr	+$31,500
Elementary (K-5)	$30,000/yr	$10,600/yr	+$19,400
Middle School (6-8)	$36,800/yr	$13,000/yr	+$23,800
High School (9-12)	$46,000/yr	$16,000/yr	+$30,000

K-12 Total Cost (13 Years)

Boston

$478,400

St. Louis

$169,000

Choosing St. Louis saves $309,400 per child over a full K-12 career. Two kids? That's $618,800.

Sample Schools

Boston

Boston Latin School (Exam)

Exam School (Public) · 7–12

Roxbury Latin School

Independent (need-based) · 7–12

Belmont Hill School

Independent · 7–12 · $59,800/yr

Boston College High School

Catholic · 9–12 · $23,100/yr

St. Louis

John Burroughs School

Independent · 7–12 · $28,400-$30,800/yr

MICDS (Mary Institute and Country Day School)

Independent · JK–12 · $30,200-$32,800/yr

Chaminade College Preparatory

Catholic · 6–12 · $16,800/yr

St. Louis University High School

Catholic · 9–12 · $17,400/yr

Full Boston breakdown → Full St. Louis breakdown →

Massachusetts private school costs Missouri private school costs

Related Comparisons

New York vs Boston → Boston vs Phoenix → Boston vs Philadelphia →

About This Comparison

This comparison uses NCES Private School Universe Survey data, adjusted for metro-level cost-of-living differences. "Average tuition" blends religious schools (Catholic, Christian) and independent day/prep schools. Religious schools typically cost 60-70% less than independent schools in the same city.

Grade-level estimates (elementary, middle, high) are derived from the city average using national grade-level multipliers. High school tuition typically runs 15-25% above the city average; elementary runs 10-20% below.