Private School Review - Established 2003
Bishop Kelly High School Top 3 · Most AP Courses (ID)
Sun Valley Community School Top 3 · Lowest Acceptance Rate (ID)
Riverstone International School Top 3 · Highest Avg. SAT Score (ID)

Average Private School Endowment in Idaho

The average private school endowment in Idaho is $0M (2026-27).
The private school in Idaho with the highest endowment is Bishop Kelly High School, with a endowment of $14M.

Quick Facts (26-27)

  • # ID Schools Ranked: 4
  • Top 20 Range (Endowment): $2M–$14M
  • ID School Avg.: $8M
  • National School Avg.: $23M

Quick Facts (26-27)

  • # ID Schools Ranked: 4
  • Top 20 Range (Endowment): $2M–$14M
  • ID School Avg.: $8M
  • National School Avg.: $23M
Show school map — Idaho (endowment range: $2M–$14M, avg $8M)
Endowment Range: $2.3M $14M Avg. Endowment: $7.6M

Average Private School Endowment in Idaho (2026-27)

Showing 4 schools
Bishop Kelly High School Photo
#1Bishop Kelly High School
Gr: 9-12 | 870 students
Avg. class size: 21 students
Sports: 22 | Extracurriculars: 30
Catholic
7009 Franklin Rd
Boise, ID 83709
(208) 375-6010
$14endowment
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Sun Valley Community School Photo
#2Sun Valley Community School
Gr: PK-12 | 423 students
Avg. class size: 15 students
Sports: 22 | Extracurriculars: 11
Po Box 2118
Sun Valley, ID 83353
(208) 622-3960
$10endowment
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Riverstone International School Photo
#3Riverstone International School
Gr: PK-12 | 355 students
Avg. class size: 15 students
Sports: 11 | Extracurriculars: 21
5521 E Warm Springs Ave
Boise, ID 83716
(208) 424-5000
(11)
$4endowment
View Profile
Map of St. Mary's Catholic School
#4 St. Mary's Catholic School
Gr: NS-8 | 107 students
Avg. class size: 14 students
Extracurriculars: 2
Catholic
412 N Monroe St
Moscow, ID 83843
(208) 882-2121
(1)
$2endowment
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Frequently Asked Questions

What are the private schools with the highest endowment in Idaho?
The top ranked private schools in Idaho include Bishop Kelly High School, Sun Valley Community School and Riverstone International 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 $14.0M. The private elementary school with the highest endowment is Sun Valley Community School, with a value of $10.0M.

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