The average private school endowment in Washington is $41.2M (2025-26).
The private school in Washington with the highest endowment is Willows Preparatory School, with a endowment of $500M.
Endowment Range: $2M
$500M
Avg. Endowment: $58.3M
Average Private 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: #22.
Endowment: $350 M
Grades: PK-8
455 W 18th Ave
Spokane, WA 99203
(509) 624-8759
Spokane, WA 99203
(509) 624-8759
Rank: #33.
Endowment: $75 M
Grades: PK-8
3816 College St Se
Lacey, WA 98503
(360) 878-8915
Lacey, WA 98503
(360) 878-8915
Rank: #44.
Northwest Montessori School - Wedgewood
Montessori School
Endowment: $60 M
Grades: PK-6
7400 25th Ave Ne
Seattle, WA 98115
(206) 524-4244
Seattle, WA 98115
(206) 524-4244
Rank: #5 - 205. - 20.
Bethlehem Lutheran School
(Lutheran Church Missouri Synod)
Endowment: $50 M
Grades: PK-8
2505 W. 27th Ave.
Kennewick, WA 99337
(509) 582-5624
Kennewick, WA 99337
(509) 582-5624
Rank: #5 - 205. - 20.
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: #5 - 205. - 20.
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: #5 - 205. - 20.
Endowment: $50 M
Grades: 7-12
811 21st St Se
Puyallup, WA 98372
(253) 841-1776
Puyallup, WA 98372
(253) 841-1776
Rank: #5 - 205. - 20.
Endowment: $50 M
Grades: K-12
202 E 56th Street
Tacoma, WA 98404
(253) 475-9513
Tacoma, WA 98404
(253) 475-9513
Rank: #5 - 205. - 20.
Crestview Christian School
(Seventh Day Adventist)
Endowment: $50 M
Grades: K-8
1601 W Valley Road
Moses Lake, WA 98837
(509) 765-4632
Moses Lake, WA 98837
(509) 765-4632
Rank: #5 - 205. - 20.
Endowment: $50 M
Grades: 6-12
316 Fourth Avenue South
Kirkland, WA 98033
(425) 298-6451
Kirkland, WA 98033
(425) 298-6451
Rank: #5 - 205. - 20.
Family House Academy
Alternative School
Endowment: $50 M
Grades: K-8
1220 Carroll Rd
Kelso, WA 98626
(360) 425-7481
Kelso, WA 98626
(360) 425-7481
Rank: #5 - 205. - 20.
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: #5 - 205. - 20.
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: #5 - 205. - 20.
Montessori School Of Yakima
Montessori School
Endowment: $50 M
Grades: PK-6
511 N 44th Ave
Yakima, WA 98908
(509) 966-0680
Yakima, WA 98908
(509) 966-0680
Rank: #5 - 205. - 20.
Mukilteo Montessori School
Montessori School
Endowment: $50 M
Grades: PK-K
13318 Beverly Park Road - Edmonds Road
Mukilteo, WA 98275
(425) 743-4667
Mukilteo, WA 98275
(425) 743-4667
Rank: #5 - 205. - 20.
Neighborhood Christian School/
(Assembly of God)
Endowment: $50 M
Grades: PK-5
625 140th Avenue Ne
Bellevue, WA 98005
(425) 746-3258
Bellevue, WA 98005
(425) 746-3258
Rank: #5 - 205. - 20.
Renton Highlands KinderCare![Renton Highlands KinderCare Photo - Rention Highlands KinderCare]( "Renton Highlands KinderCare Photo - Rention Highlands KinderCare")
Daycare / Preschool
Endowment: $50 M
Grades: NS-PK
1225 Anacortes Ave. NE
Renton, WA 98059
(425) 271-0733
Renton, WA 98059
(425) 271-0733
Rank: #5 - 205. - 20.
Seattle Area German American School![Seattle Area German American School Photo]( "Seattle Area German American School Photo")
Special Program Emphasis
Endowment: $50 M
Grades: PK-4
11010 Greenwood Ave N
Seattle, WA 98133
(206) 442-2023
Seattle, WA 98133
(206) 442-2023
Rank: #5 - 205. - 20.
Valley Montessori School
Montessori School
Endowment: $50 M
Grades: K
14711 E Broadway Ave
Spokane, WA 99216
(509) 924-6629
Spokane, WA 99216
(509) 924-6629
Rank: #2121.
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: #2222.
Endowment: $33 M
Grades: 5-12
4800 139th Avenue SE
Bellevue, WA 98006
(425) 641-0700
Bellevue, WA 98006
(425) 641-0700
Rank: #2323.
Endowment: $33 M
Grades: NS-12
827 N Tacoma Ave
Tacoma, WA 98403
(253) 272-2216
Tacoma, WA 98403
(253) 272-2216
Rank: #2424.
Endowment: $30 M
Grades: 9-12
2300 S Washington St
Tacoma, WA 98405
(253) 752-7701
Tacoma, WA 98405
(253) 752-7701
Rank: #2525.
Endowment: $23 M
Grades: NS-8
15201 Meridian Avenue N
Seattle, WA 98133
(206) 957-1523
Seattle, WA 98133
(206) 957-1523
Rank: #2727.
Endowment: $17 M
Grades: PK-6
515 Lotzgesell Rd
Sequim, WA 98382
(360) 681-7255
Sequim, WA 98382
(360) 681-7255
Rank: #2828.
Endowment: $16 M
Grades: PK-5
3611 E Denny Way
Seattle, WA 98122
(206) 323-9011
Seattle, WA 98122
(206) 323-9011
Rank: #29 - 3029. - 30.
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: #29 - 3029. - 30.
Endowment: $10 M
Grades: PK-5
5062 9th Ave Ne
Seattle, WA 98105
(206) 547-8237
Seattle, WA 98105
(206) 547-8237
Rank: #3131.
Endowment: $7.5 M
Grades: PK-12
600 N Western Ave
Wenatchee, WA 98801
(509) 662-2723
Wenatchee, WA 98801
(509) 662-2723
Rank: #3232.
Endowment: $7 M
Grades: K-12
2929 W Waikiki Road
Spokane, WA 99208
(509) 466-1636
Spokane, WA 99208
(509) 466-1636
Rank: #3333.
Endowment: $4 M
Grades: PK-8
7112 S 12th St
Tacoma, WA 98465
(253) 564-5185
Tacoma, WA 98465
(253) 564-5185
Rank: #34 - 3834. - 38.
Endowment: $2 M
Grades: NS-8
4211 W Lake Sammamish Parkway Se
Bellevue, WA 98008
(425) 407-5695
Bellevue, WA 98008
(425) 407-5695
Rank: #34 - 3834. - 38.
King's Continuation School
(Christian)
Endowment: $2 M
Grades: K-6
19531 Dayton Ave N
Seattle, WA 98133
(206) 546-7211
Seattle, WA 98133
(206) 546-7211
Show 15 more private schools in WA (out of 50 total schools)
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Frequently Asked Questions
What is the Washington average private schools endowment?
The Washington average private schools endowment is $41.2M for 2025-26.
What are the private schools with the highest endowment in Washington?
The top ranked private schools in Washington include Willows Preparatory School, Cataldo Catholic School at St. Augustine's and Paramount Christian Academy.
What is private high school and private elementary school with the highest endowment in Washington?
The private high school with the highest endowment in Washington is Willows Preparatory School, with a value of $500.0M. The private elementary school with the highest endowment is Willows Preparatory School, with a value of $500.0M.
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