Private School Review - Established 2003
St. Thomas School Top 10 · Lowest Acceptance Rate (WA)
Dartmoor School
Charles Wright Academy Top 3 · Largest Endowment (WA)

Washington Private Schools Belonging to Northwest Association of Independent Schools (NWAIS)

For the 2026-27 school year, there are 49 private schools belonging to Northwest Association of Independent Schools (NWAIS) serving 11,920 students in Washington. You can also find more schools membership associations in Washington.
The top ranked private schools belonging to Northwest Association of Independent Schools (NWAIS) in Washington include The Little School, Holy Names Academy, and Annie Wright Schools.
The average tuition cost is $29,625, which is higher than the Washington private school average tuition cost of $15,197.
10% of private schools belonging to Northwest Association of Independent Schools (NWAIS) in Washington are religiously affiliated (most commonly Catholic and Jewish).

Quick Facts (26-27)

  • # Private Schools: 49

Quick Facts (26-27)

  • # Private Schools: 49

Top Ranked Private Schools Belonging to Northwest Association of Independent Schools (NWAIS) in Washington (2026-27)

Charles Wright Academy Photo
Charles Wright Academy
Gr: PK-12 | 578 students
Avg. class size: 14 students
Sports: 11 | Extracurriculars: 47
7723 Chambers Creek Rd W University Place
University Place, WA 98467
(253) 620-8373
(6)
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Map of Eastside Catholic School
Eastside Catholic School
Gr: 6-12 | 826 students
Avg. class size: 22 students
Sports: 15 | Extracurriculars: 31
Catholic
232 228th Avenue SE
Sammamish, WA 98074
(425) 295-3000
(7)
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The Little School Photo
The Little School
Gr: PK-5 | 232 students
Avg. class size: 15 students
Sports: 2 | Extracurriculars: 3
2812 116th Ave NE
Bellevue, WA 98004
(425) 827-8708
(10)
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Map of The Northwest School
The Northwest School
Gr: 6-12 | 446 students
Avg. class size: 17 students
Sports: 6 | Extracurriculars: 14
1415 Summit Ave
Seattle, WA 98122
(206) 816-6032
(10)
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St. Thomas School Photo
St. Thomas School
Gr: PK-8 | 368 students
Avg. class size: 18 students
Sports: 6 | Extracurriculars: 9
8300 NE 12th Street
Medina, WA 98039
(425) 454-5880
(8)
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Silverwood School Photo
Silverwood School
Gr: K-8 | 87 students
Avg. class size: 20 students
Extracurriculars: 6
14000 Central Valley Rd NW
Poulsbo, WA 98370
(360) 697-7526
(27)
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Dartmoor School Photo
Dartmoor School
Gr: 1-12 | 37 students
Avg. class size: 1 student
Alternative School
6515 15th Ave NE
Seattle, WA 98115
(425) 885-6296
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Dartmoor School Photo
Dartmoor School
Gr: 1-12 | 23 students
Avg. class size: 1 student
Alternative School
22500 SE 64th PL, #150
Bellevue, WA 98027
(425) 885-6296
(1)
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Seattle Waldorf School Photo
Seattle Waldorf School
Gr: NS-8 | 184 students
Avg. class size: 22 students
Sports: 4 | Extracurriculars: 9
Specialized Curriculum
2728 NE 100th Street
Seattle, WA 98125
(206) 524-5320
(11)
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Annie Wright Schools Photo
Annie Wright Schools
Gr: NS-12 | 902 students
Avg. class size: 14 students
Sports: 8 | Extracurriculars: 30
827 N Tacoma Ave
Tacoma, WA 98403
(253) 272-2216
(2)
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Eton School Photo
Eton School
Gr: PK-8 | 312 students
Avg. class size: 18 students
Sports: 3 | Extracurriculars: 14
Montessori School
2701 Bellevue-Redmond Road
Bellevue, WA 98008
(425) 881-4230
(3)
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The Evergreen School Photo
The Evergreen School
Gr: NS-8 | 554 students
Avg. class size: 18 students
Sports: 7 | Extracurriculars: 10
Specialized Curriculum
15201 Meridian Avenue N
Seattle, WA 98133
(206) 957-1523
(7)
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French American School of Puget Sound Photo
French American School of Puget Sound
Gr: PK-8 | 473 students
Avg. class size: 18 students
Sports: 5
Specialized Curriculum
3795 East Mercer Way
Mercer Island, WA 98040
(206) 275-3533
(8)
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The Gardner School Of Arts & Sciences Photo
The Gardner School Of Arts & Sciences
Gr: PK-6 | 103 students
Avg. class size: 16 students
Specialized Curriculum
16413 NE 50th Ave
Vancouver, WA 98686
(360) 574-5752
(12)
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Hamlin Robinson School Photo
Hamlin Robinson School
Gr: 1-8 | 426 students
Avg. class size: 15 students
Sports: 4 | Extracurriculars: 6
Special Education School
1701 20th Ave S
Seattle, WA 98144
(206) 763-1167
(3)
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Holy Names Academy Photo
Holy Names Academy
Gr: 9-12 | 575 students
Avg. class size: 21 students
Sports: 17
All-girls (Catholic)
728 21st Ave E
Seattle, WA 98112
(206) 323-4272
(3)
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The Island School Photo
The Island School
Gr: PK-5 | 87 students
Avg. class size: 12 students
8553 NE Day Road
Bainbridge Island, WA 98110
(206) 842-0400
(12)
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KapKa Cooperative Elementary School Photo
KapKa Cooperative Elementary School
Gr: K-5 | 51 students
Avg. class size: 11 students
Extracurriculars: 10
510 N 49th St
Seattle, WA 98103
(206) 522-0350
(7)
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The Kineo School Photo
The Kineo School
Gr: K-5 | 13 students
Avg. class size: 12 students
Special Education School
7525 132nd Ave NE
Kirkland, WA 98033
(425) 394-9378
(8)
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North Seattle French School Photo
North Seattle French School
Gr: NS-5 | 104 students
Sports: 3 | Extracurriculars: 5
Specialized Curriculum
18560 1ST AVE NE
Seattle, WA 98155
(206) 365-1034
(5)
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Northwest Yeshiva High School Photo
Northwest Yeshiva High School
Gr: 9-12 | 65 students
Avg. class size: 12 students
Sports: 5 | Extracurriculars: 11
Jewish
5017 90th Avenue SE
Mercer Island, WA 98040
(206) 232-5272
(8)
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Open Window School Photo
Open Window School
Gr: K-8 | 370 students
Avg. class size: 19 students
Sports: 4 | Extracurriculars: 5
6128 168th Place SE
Bellevue, WA 98006
(425) 747-2911
(3)
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Saint George's School Photo
Saint George's School
Gr: K-12 | 330 students
Avg. class size: 12 students
Sports: 16 | Extracurriculars: 16
2929 W Waikiki Road
Spokane, WA 99208
(509) 464-8744
(2)
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Seattle Country Day School Photo
Seattle Country Day School
Gr: K-8 | 420 students
Avg. class size: 18 students
Sports: 12 | Extracurriculars: 7
Specialized Curriculum
2619 4th Ave N
Seattle, WA 98109
(206) 812-8907
(2)
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Soundview School Photo
Soundview School
Gr: NS-8 | 159 students
Avg. class size: 18 students
Sports: 2 | Extracurriculars: 7
Specialized Curriculum
6515 196th St SW
Lynnwood, WA 98036
(425) 778-8572
(2)
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UPrep Photo
UPrep
Gr: 6-12 | 781 students
Avg. class size: 18 students
Sports: 8 | Extracurriculars: 15
8000 25th Ave NE
Seattle, WA 98115
(206) 525-2714
(10)
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Villa Academy Photo
Villa Academy
Gr: PK-8 | 383 students
Avg. class size: 20 students
Sports: 6 | Extracurriculars: 20
Catholic
5001 Ne 50th Street
Seattle, WA 98105
(206) 524-8885
(5)
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Westside School Photo
Westside School
Gr: NS-8 | 360 students
Avg. class size: 18 students
Sports: 6 | Extracurriculars: 3
10404 34th Avenue SW
Seattle, WA 98146
(206) 932-2511
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Willows Preparatory School Photo
Willows Preparatory School
Gr: 5-12 | 276 students
Sports: 8 | Extracurriculars: 15
12280 Woodinville Redmond Rd Ne
Redmond, WA 98052
(425) 380-5670
(4)
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Woodinville Montessori School | Bothell Campus Photo
Woodinville Montessori School | Bothell Campus
Gr: NS-12 | 459 students
Avg. class size: 20 students
Sports: 7 | Extracurriculars: 25
Montessori School
19102 North Creek Parkway
Bothell, WA 98011
(425) 482-3184
(1)
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Academy For Precision Learning Photo
Academy For Precision Learning
Gr: K-12 | 67 students
Avg. class size: 7 students
Extracurriculars: 2
Alternative School
1432 15th Ave
Seattle, WA 98122
(206) 427-0115
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Billings Middle School Photo
Billings Middle School
Gr: 6-8 | 75 students
Avg. class size: 15 students
Sports: 13 | Extracurriculars: 12
12351 8th Ave NE
Seattle, WA 98125
(206) 547-4614
(14)
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Bright Water Waldorf School Photo
Bright Water Waldorf School
Gr: NS-8 | 119 students
Avg. class size: 11 students
Sports: 5
Specialized Curriculum
1414 South Weller Street
Seattle, WA 98144
(206) 624-6176
(3)
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Explorer West Middle School Photo
Explorer West Middle School
Gr: 6-8 | 109 students
Avg. class size: 16 students
Sports: 6 | Extracurriculars: 10
10015 28th Ave SW
Seattle, WA 98146
(206) 935-0495
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French Immersion School Of Washington Photo
French Immersion School Of Washington
Gr: NS-8 | 179 students
Avg. class size: 14 students
Sports: 10 | Extracurriculars: 13
Specialized Curriculum
4211 W Lake Sammamish Parkway Se
Bellevue, WA 98008
(425) 407-5695
(14)
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Show 14 more private schools in Washington (out of 49 total schools)
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Frequently Asked Questions

What are the top ranked private schools belonging to Northwest Association of Independent Schools (NWAIS) in Washington?
The top ranked private schools belonging to Northwest Association of Independent Schools (NWAIS) in Washington include The Little School, Holy Names Academy, and Annie Wright Schools.
How many private schools belonging to Northwest Association of Independent Schools (NWAIS) are located in Washington?
49 private schools belonging to Northwest Association of Independent Schools (NWAIS) are located in Washington.
How much do private schools belonging to Northwest Association of Independent Schools (NWAIS) cost in Washington?
The average tuition cost is $29,625, which is higher than the Washington private school average tuition cost of $15,197.
How diverse are private schools belonging to Northwest Association of Independent Schools (NWAIS) in Washington?
Washington private schools belonging to Northwest Association of Independent Schools (NWAIS) are approximately 41% minority students, which is higher than the Washington private school average of 32%.
What percentage of private schools belonging to Northwest Association of Independent Schools (NWAIS) are religiously affiliated in Washington?
10% of private schools belonging to Northwest Association of Independent Schools (NWAIS) in Washington are religiously affiliated (most commonly Catholic and Jewish).
49
Private Schools
11,920
Students
$29,625
Avg. Tuition
41%
Students of Color
8:1
Student-Teacher Ratio

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