The average private high school endowment in Washington is $49.4M (2025-26).
The private high school in Washington with the highest endowment is Willows Preparatory School, with a endowment of $500M.
Endowment Range: $1M
$500M
Avg. Endowment: $49.4M
Average Private High School endowment in Washington (2025-26)
School
Endowment
Grades
Location
Rank: #11.
Endowment: $500 M
Grades: 5-12
12280 Woodinville Redmond Rd Ne
Redmond, WA 98052
(425) 380-5670
Redmond, WA 98052
(425) 380-5670
Rank: #2 - 82. - 8.
Bishop Blanchet High School![Bishop Blanchet High School Photo]( "Bishop Blanchet High School Photo")
(Catholic)
Endowment: $50 M
Grades: 9-12
8200 Wallingford Ave N
Seattle, WA 98103
(206) 527-7711
Seattle, WA 98103
(206) 527-7711
Rank: #2 - 82. - 8.
Brightmont Academy - Sammamish![Brightmont Academy - Sammamish Photo - Taking individual courses at Brightmont Academy offers an effective one-to-one instruction alternative for students to learn concepts and skills by progressing at their own pace.]( "Brightmont Academy - Sammamish Photo - Taking individual courses at Brightmont Academy offers an effective one-to-one instruction alternative for students to learn concepts and skills by progressing at their own pace.")
Special Program Emphasis
Endowment: $50 M
Grades: 1-12
4588 Klahanie Dr SE Suite 401
Issaquah, WA 98029
(425) 836-1600
Issaquah, WA 98029
(425) 836-1600
Rank: #2 - 82. - 8.
Endowment: $50 M
Grades: 7-12
811 21st St Se
Puyallup, WA 98372
(253) 841-1776
Puyallup, WA 98372
(253) 841-1776
Rank: #2 - 82. - 8.
Endowment: $50 M
Grades: K-12
202 E 56th Street
Tacoma, WA 98404
(253) 475-9513
Tacoma, WA 98404
(253) 475-9513
Rank: #2 - 82. - 8.
Endowment: $50 M
Grades: 6-12
316 Fourth Avenue South
Kirkland, WA 98033
(425) 298-6451
Kirkland, WA 98033
(425) 298-6451
Rank: #2 - 82. - 8.
King's Schools![King's Schools Photo - Junior High Armor Adventure.]( "King's Schools Photo - Junior High Armor Adventure.")
(Christian)
Endowment: $50 M
Grades: PK-12
19303 Fremont Ave. N.
Seattle, WA 98133
(206) 289-7783
Seattle, WA 98133
(206) 289-7783
Rank: #2 - 82. - 8.
Mason County Christian School
(Baptist)
Endowment: $50 M
Grades: K-10
470 E Eagle Ridge Dr
Shelton, WA 98584
(360) 426-7616
Shelton, WA 98584
(360) 426-7616
Rank: #99.
Endowment: $40 M
Grades: NS-12
7723 Chambers Creek Rd W University Place
University Place, WA 98467
(253) 620-8373
University Place, WA 98467
(253) 620-8373
Rank: #1010.
Endowment: $33 M
Grades: 5-12
4800 139th Avenue SE
Bellevue, WA 98006
(425) 641-0700
Bellevue, WA 98006
(425) 641-0700
Rank: #1111.
Endowment: $33 M
Grades: NS-12
827 N Tacoma Ave
Tacoma, WA 98403
(253) 272-2216
Tacoma, WA 98403
(253) 272-2216
Rank: #1212.
Endowment: $30 M
Grades: 9-12
2300 S Washington St
Tacoma, WA 98405
(253) 752-7701
Tacoma, WA 98405
(253) 752-7701
Rank: #1414.
King's School
(Christian)
Endowment: $10 M
Grades: PK-12
19303 Fremont Ave N Ms 40
Seattle, WA 98133
(206) 546-7211
Seattle, WA 98133
(206) 546-7211
Rank: #1515.
Endowment: $7.5 M
Grades: PK-12
600 N Western Ave
Wenatchee, WA 98801
(509) 662-2723
Wenatchee, WA 98801
(509) 662-2723
Rank: #1616.
Endowment: $7 M
Grades: K-12
2929 W Waikiki Road
Spokane, WA 99208
(509) 466-1636
Spokane, WA 99208
(509) 466-1636
Rank: #17 - 1817. - 18.
Endowment: $2 M
Grades: NS-12
1717 S Union Ave
Tacoma, WA 98405
(253) 756-5317
Tacoma, WA 98405
(253) 756-5317
Rank: #17 - 1817. - 18.
Endowment: $2 M
Grades: NS-12
4320 87th Avenue SE
Mercer Island, WA 98040
(206) 232-5432
Mercer Island, WA 98040
(206) 232-5432
Rank: #19 - 2119. - 21.
Endowment: $1 M
Grades: NS-12
3606 NE 78th St
Vancouver, WA 98665
(360) 574-1613
Vancouver, WA 98665
(360) 574-1613
Rank: #19 - 2119. - 21.
Endowment: $1 M
Grades: PK-12
18943 120th Ave NE
Bothell, WA 98011
(425) 774-6622
Bothell, WA 98011
(425) 774-6622
Rank: #19 - 2119. - 21.
Walla Walla Valley Academy
(Seventh Day Adventist)
Endowment: $1 M
Grades: 9-12
300 Sw Academy Way
College Place, WA 99324
(509) 525-1050
College Place, WA 99324
(509) 525-1050
Frequently Asked Questions
What is the Washington average private high schools endowment?
The Washington average private high schools endowment is $49.4M for 2025-26.
What are the private high schools with the highest endowment in Washington?
The top ranked private high schools in Washington include Willows Preparatory School, Bishop Blanchet High School and Brightmont Academy - Sammamish.
Recent Articles
Transferring from Public to Private School Mid-Year: What to Expect
Considering a mid-year transfer from public to private school? Learn what to expect with admissions, academic placement, social adjustment, and financial aid to ensure a smooth transition.
A Guide to Day vs. Boarding School: Which Is Right for Your Family
Discover the key differences between day and boarding schools to determine the best fit for your child. Explore benefits, costs, lifestyle factors, and questions to help guide your family’s decision.
The A to Z of Private Schools 2025
Explore the A to Z of private schools in 2025—from admissions to tuition—offering parents and educators clear insights into today’s options.
