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Chestnut Hill Academy
Dartmoor School

Washington Private Schools Belonging to National Association of Independent Schools (NAIS)

For the 2026-27 school year, there are 65 private schools belonging to National Association of Independent Schools (NAIS) serving 21,246 students in Washington. You can also find more schools membership associations in Washington.
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Washington include Charles Wright Academy, Holy Names Academy, and Annie Wright Schools.
The average tuition cost is $31,164, which is higher than the Washington private school average tuition cost of $15,225.
23% of private schools belonging to National Association of Independent Schools (NAIS) in Washington are religiously affiliated (most commonly Catholic and Christian).

Quick Facts (26-27)

  • # Private Schools: 65

Quick Facts (26-27)

  • # Private Schools: 65

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

The Bear Creek School Photo
The Bear Creek School
Gr: PK-12 | 945 students
Avg. class size: 16 students
Sports: 9 | Extracurriculars: 14
Christian
8905 208th Avenue NE
Redmond, WA 98053
(425) 898-1720
(12)
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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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Chestnut Hill Academy Photo
Chestnut Hill Academy
Gr: K-5 | 347 students
Avg. class size: 16 students
Sports: 2 | Extracurriculars: 15
13633 SE 26th St
Bellevue, WA 98005
(425) 372-2800
(10)
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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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Epiphany School Photo
Epiphany School
Gr: PK-5 | 260 students
Sports: 1 | Extracurriculars: 5
3611 E Denny Way
Seattle, WA 98122
(206) 323-9011
(8)
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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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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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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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Dartmoor School Photo
Dartmoor School
Gr: 1-12 | 29 students
Avg. class size: 1 student
Alternative School
19515 North Creek Pkwy. #208
Bothell, WA 98011
(425) 885-6296
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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 | 43 students
Avg. class size: 1 student
Alternative School
2800 Northup Way, Suite 120
Bellevue, WA 98004
(425) 885-6296
(1)
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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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Bertschi School Photo
Bertschi School
Gr: PK-5 | 268 students
Avg. class size: 20 students
Sports: 2
2227 10th Avenue E
Seattle, WA 98102
(206) 442-6856
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Bishop Blanchet High School Photo
Bishop Blanchet High School
Gr: 9-12 | 855 students
Avg. class size: 22 students
Sports: 16 | Extracurriculars: 20
Catholic
8200 Wallingford Ave N
Seattle, WA 98103
(206) 527-7711
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The Bush School Photo
The Bush School
Gr: K-12 | 775 students
Avg. class size: 15 students
Sports: 11
3400 E Harrison Street
Seattle, WA 98112
(206) 322-7978
(1)
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Map of Eastside Catholic High School
Eastside Catholic High School
Gr: 6-12 | 862 students
Catholic
232 228th Ave Se
Sammamish, WA 98074
(425) 295-3024
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Eastside Preparatory School Photo
Eastside Preparatory School
Gr: 5-12 | 538 students
Avg. class size: 16 students
Sports: 11 | Extracurriculars: 24
10613 NE 38th Place
Kirkland, WA 98033
(425) 822-5668
(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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Faith Lutheran School Photo
Faith Lutheran School
Gr: NS | 80 students
Avg. class size: 12 students
Sports: 1 | Extracurriculars: 5
Daycare / Preschool (Christian)
9041 166th Ave NE
Redmond, WA 98052
(425) 885-1810
(8)
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Forest Ridge School Of The Sacred Heart Photo
Forest Ridge School Of The Sacred Heart
Gr: 5-12 | 200 students
Avg. class size: 12 students
Sports: 13 | Extracurriculars: 30
All-girls (Catholic)
4800 139th Avenue SE
Bellevue, WA 98006
(425) 641-0700
(2)
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Map of The Franklin Academy
The Franklin Academy
Gr: NS-8 | 442 students
Sports: 4
1509 E. Victor Street
Bellingham, WA 98225
(360) 733-1750
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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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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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King's Way Christian Schools Photo
King's Way Christian Schools
Gr: NS-12 | 1,128 students
Avg. class size: 20 students
Sports: 11 | Extracurriculars: 13
Christian
3606 NE 78th St
Vancouver, WA 98665
(360) 574-1613
(8)
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The Lake And Park School Photo
The Lake And Park School
Gr: PK-5 | 80 students
Avg. class size: 10 students
Sports: 2
3201 Hunter Blvd South
Seattle, WA 98144
(206) 721-3480
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Lake Washington Girls Middle School Photo
Lake Washington Girls Middle School
Gr: 6-8 | 95 students
Avg. class size: 14 students
Sports: 8 | Extracurriculars: 8
All-girls
2100 S. Walker Street
Seattle, WA 98144
(206) 709-3800
(6)
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Map of Lakeside School
Lakeside School
Gr: 1-8 | 142 students
Avg. class size: 17 students
Sports: 15 | Extracurriculars: 24
Amish
14050 1st Avenue NE
Seattle, WA 98125
(260) 593-3209
(1)
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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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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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The Overlake School Photo
The Overlake School
Gr: 5-12 | 574 students
Avg. class size: 14 students
Sports: 9 | Extracurriculars: 16
20301 NE 108th Street
Redmond, WA 98053
(425) 868-1000
(2)
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Map of St. Francis Of Assisi School
St. Francis Of Assisi School
Gr: K-8 | 519 students
Avg. class size: 26 students
Sports: 5 | Extracurriculars: 4
Catholic
15216 21st Ave S.w.
Seattle, WA 98166
(206) 243-5690
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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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Map of St. John Vianney School
St. John Vianney School
Gr: PK-8 | 160 students
Avg. class size: 20 students
Catholic
501 N Walnut Rd
Spokane, WA 99206
(509) 926-7987
(2)
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Show 30 more private schools in Washington (out of 65 total schools)
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Frequently Asked Questions

What are the top ranked private schools belonging to National Association of Independent Schools (NAIS) in Washington?
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Washington include Charles Wright Academy, Holy Names Academy, and Annie Wright Schools.
How many private schools belonging to National Association of Independent Schools (NAIS) are located in Washington?
65 private schools belonging to National Association of Independent Schools (NAIS) are located in Washington.
How much do private schools belonging to National Association of Independent Schools (NAIS) cost in Washington?
The average tuition cost is $31,164, which is higher than the Washington private school average tuition cost of $15,225.
How diverse are private schools belonging to National Association of Independent Schools (NAIS) in Washington?
Washington private schools belonging to National Association of Independent Schools (NAIS) are approximately 36% minority students, which is higher than the Washington private school average of 32%.
What percentage of private schools belonging to National Association of Independent Schools (NAIS) are religiously affiliated in Washington?
23% of private schools belonging to National Association of Independent Schools (NAIS) in Washington are religiously affiliated (most commonly Catholic and Christian).
65
Private Schools
21,246
Students
$31,164
Avg. Tuition
36%
Students of Color
9:1
Student-Teacher Ratio

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