The average private school endowment in Idaho is $45.8M (2026).
The private school in Idaho with the highest endowment is Challenger School - Boise, with a endowment of $200M.
Endowment Range: $2.3M
$200M
Avg. Endowment: $45.8M
Average Private School endowment in Idaho (2026)
School
Endowment
Grades
Location
Rank: #11.
Challenger School - Boise![Challenger School - Boise Photo]( "Challenger School - Boise Photo")
Daycare / Preschool
Endowment: $200 M
Grades: NS-1
5551 W. Bloom Street
Boise, ID 83703
(208) 338-9500
Boise, ID 83703
(208) 338-9500
Rank: #22.
Logan Christian Academy
Alternative School (Christian)
Endowment: $50 M
Grades: K-7
219 N Roosevelt St
Boise, ID 83706
(208) 912-2783
Boise, ID 83706
(208) 912-2783
Rank: #33.
Bishop Kelly High School![Bishop Kelly High School Photo]( "Bishop Kelly High School Photo")
(Catholic)
Endowment: $10 M
Grades: 9-12
7009 Franklin Rd
Boise, ID 83709
(208) 375-6010
Boise, ID 83709
(208) 375-6010
Rank: #44.
Endowment: $8.7 M
Grades: PK-12
Po Box 2118
Sun Valley, ID 83353
(208) 622-3960
Sun Valley, ID 83353
(208) 622-3960
Rank: #55.
Endowment: $4 M
Grades: PK-12
5521 E Warm Springs Ave
Boise, ID 83716
(208) 424-5000
Boise, ID 83716
(208) 424-5000
Rank: #66.
Endowment: $2.3 M
Grades: NS-8
412 N Monroe St
Moscow, ID 83843
(208) 882-2121
Moscow, ID 83843
(208) 882-2121
Frequently Asked Questions
What is the Idaho average private schools endowment?
The Idaho average private schools endowment is $45.8M for 2026.
What are the private schools with the highest endowment in Idaho?
The top-ranked private schools in Idaho include Challenger School - Boise, Logan Christian Academy and Bishop Kelly High School.
What is private high school and private elementary school with the highest endowment in Idaho?
The private high school with the highest endowment in Idaho is Bishop Kelly High School, with a value of $10.0M. The private elementary school with the highest endowment is Challenger School - Boise, with a value of $200.0M.
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