Is private school cheaper in Boise or Joliet?

Boise has lower average private school tuition at $8,000/year vs $12,100/year in Joliet. That's $4,100/year less, or $53,300 over a K-12 career.

How much can I save on private school by choosing Boise over Joliet?

Average tuition in Boise is $4,100/year less than Joliet. Over 13 years (K-12), that's $53,300 per child. Religious schools are the most affordable option in both cities: $5,500/year in Boise, $7,600/year in Joliet.

How do Boise and Joliet private school costs compare to the national average?

The national average private school tuition is $12,350/year. Boise averages $8,000/year ($4,350 below average). Joliet averages $12,100/year ($250 below average).

Private School Cost: Boise vs Joliet

Boise averages $4,100/year less for private school (51% cheaper). Over K-12, that's $53,300 per child.

Bottom Line

Boise is the cheaper city for private school. Average tuition: $8,000/year vs $12,100/year in Joliet. Religious schools run $5,500/year on the low end.

Boise

$8,000

avg tuition/year

$4,350 below national avg

Lower cost

Joliet

$12,100

avg tuition/year

$250 below national avg

Tuition by School Type & Grade

Category	Boise	Joliet	Difference
All Schools (Average)	$8,000/yr	$12,100/yr	-$4,100
Religious Schools	$5,500/yr	$7,600/yr	-$2,100
Independent/Prep	$15,500/yr	$27,900/yr	-$12,400
Elementary (K-5)	$6,800/yr	$10,300/yr	-$3,500
Middle School (6-8)	$8,000/yr	$12,100/yr	-$4,100
High School (9-12)	$9,600/yr	$14,500/yr	-$4,900

K-12 Total Cost (13 Years)

Boise

$104,000

Joliet

$157,300

Choosing Boise saves $53,300 per child over a full K-12 career. Two kids? That's $106,600.

Sample Schools

Boise

The Ambrose School (Boise)

Christian Classical · PK–12 · $12,200-$14,800/yr

Boise Christian School

Christian · K–12 · $9,400-$11,800/yr

Joliet

Joliet Catholic Academy

Catholic · 9–12 · $14,800/yr

Plainfield Academy

Christian · K–12 · $9,400-$11,800/yr

Full Boise breakdown → Full Joliet breakdown →

Idaho private school costs Illinois private school costs

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.