Riverstone International School Photo - Riverstone International School is the premier, IB day/boarding school in Boise for Preschool-Gr 12 students. The school's 14 acre campus is nestled between the Boise River and the Greenbelt in Southeast Boise.

Average Private Elementary School endowment in Idaho

The average private elementary school endowment in Idaho is $53M (2025-26).
The private elementary school in Idaho with the highest endowment is Challenger School - Boise, with a endowment of $200M.
Endowment Range: $2.3M $200M Avg. Endowment: $53M

Average Private Elementary School endowment in Idaho (2025-26)

School
Endowment
Grades
Location
Rank: #11.
Challenger School - Boise
Challenger School - Boise Photo
Daycare / Preschool
Endowment: $200 M
Grades: NS-1
5551 W. Bloom Street
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
Rank: #33.
Endowment: $8.7 M
Grades: PK-12
Po Box 2118
Sun Valley, ID 83353
(208) 622-3960
Rank: #44.
Endowment: $4 M
Grades: PK-12
5521 E Warm Springs Ave
Boise, ID 83716
(208) 424-5000
Rank: #55.
St. Mary's Catholic School
(Catholic)
(1)
Endowment: $2.3 M
Grades: NS-8
412 N Monroe St
Moscow, ID 83843
(208) 882-2121

Frequently Asked Questions

What is the Idaho average private elementary schools endowment?
The Idaho average private elementary schools endowment is $53M for 2025-26.
What are the private elementary schools with the highest endowment in Idaho?
The top ranked private elementary schools in Idaho include Challenger School - Boise, Logan Christian Academy and Sun Valley Community School.

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