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Top 20 Best Washington Private Schools Belonging to NWAIS (Northwest Association of Independent Schools) (2024-25)

For the 2024-25 school year, there are 46 private schools belonging to NWAIS (Northwest Association of Independent Schools) serving 11,588 students in Washington. You can also find more schools membership associations in Washington.
The top ranked private schools belonging to NWAIS (Northwest Association of Independent Schools) in Washington include Charles Wright Academy, Annie Wright Schools, and Holy Names Academy.
The average tuition cost is $28,237, which is higher than the Washington private school average tuition cost of $13,978.
13% of private schools belonging to NWAIS (Northwest Association of Independent Schools) in Washington are religiously affiliated (most commonly Catholic and Jewish).

Top Ranked Private Schools Belonging to NWAIS (Northwest Association of Independent Schools) in Washington (2024-25)

School
Location
Grades
Students
Charles Wright Academy
Charles Wright Academy Photo - Charles Wright Academy's Lower School, Middle School, and Upper School are home to more than 550 students from age 30 months to 12th grade. All three schools are situated on a beautiful, wooded 107-acre campus in University Place.
(6)
7723 Chambers Creek Rd W University Place
University Place, WA 98467
(253) 620-8373
Grades: NS-12
| 578 students
Eastside Catholic School
Eastside Catholic School Photo - The Eastside Catholic School campus is situated on 50 acres on Sammamish plateau and surrounded by protected wetlands and forest.
(Catholic)
(7)
232 228th Avenue SE
Sammamish, WA 98074
(425) 295-3000
Grades: 6-12
| 836 students
The Little School
The Little School Photo
(9)
2812 116th Ave NE
Bellevue, WA 98004
(425) 827-8708
Grades: PK-5
| 232 students
St. Thomas School
St. Thomas School Photo
(5)
8300 NE 12th Street
Medina, WA 98039
(425) 454-5880
Grades: PK-8
| 330 students
Silverwood School
Silverwood School Photo - Welcome to Silverwood School!
Montessori School
(22)
14000 Central Valley Rd NW
Poulsbo, WA 98370
(360) 697-7526
Grades: K-8
| 84 students
UPrep
UPrep Photo
(9)
8000 25th Ave NE
Seattle, WA 98115
(206) 525-2714
Grades: 6-12
| 703 students
Seattle Waldorf School
Seattle Waldorf School Photo
Special Program Emphasis
(10)
2728 NE 100th Street
Seattle, WA 98125
(206) 524-5320
Grades: NS-8
| 193 students
Annie Wright Schools
Annie Wright Schools Photo - Founded in 1884, Annie Wright Schools are nestled in the beautiful North End neighborhood of Tacoma, Washington. Our historic campus includes an indoor pool, two gyms, science and technology labs, art and music studios, theater, outdoor gardens, play areas, athletic fields and open spaces.
(Episcopal)
(2)
827 N Tacoma Ave
Tacoma, WA 98403
(253) 272-2216
Grades: NS-12
| 838 students
The Evergreen School
The Evergreen School Photo
Special Program Emphasis
(7)
15201 Meridian Avenue N
Seattle, WA 98133
(206) 957-1523
Grades: NS-8
| 508 students
French American School of Puget Sound
French American School of Puget Sound Photo - Playground at the main campus in Mercer Island
Special Program Emphasis
(8)
3795 East Mercer Way
Mercer Island, WA 98040
(206) 275-3533
Grades: PK-8
| 453 students
Hamlin Robinson School
Hamlin Robinson School Photo
Special Education School
(3)
1701 20th Ave S
Seattle, WA 98144
(206) 763-1167
Grades: 1-8
| 403 students
Holy Names Academy
Holy Names Academy Photo
All-girls (Catholic)
(3)
728 21st Ave E
Seattle, WA 98112
(206) 323-4272
Grades: 9-12
| 575 students
https://www.etonschool.org
https://www.etonschool.org Photo - Students at Eton School love to learn!
Montessori School
(3)
2701 Bellevue-Redmond Road
Bellevue, WA 98008
(425) 881-4230
Grades: NS-8
| 329 students
The Island School
The Island School Photo - Art students draw the cherry tree at our school entrance.
(12)
8553 NE Day Road
Bainbridge Island, WA 98110
(206) 842-0400
Grades: K-5
| 89 students
Kapka Cooperative School
Kapka Cooperative School Photo - Kindergarten lessons involve small group learning between lots of outdoor time to play and learn SEL skills
(7)
510 N 49th St
Seattle, WA 98103
(206) 522-0350
Grades: K-5
| 71 students
The Kineo School
The Kineo School Photo - THIS IS LEARNING SET IN MOTION
Alternative School
(3)
7525 132nd Ave NE
Kirkland, WA 98033
(425) 394-9378
Grades: K-5
| 10 students
The Northwest School
(10)
1415 Summit Ave
Seattle, WA 98122
(206) 816-6052
Grades: 6-12
| 446 students
Northwest Yeshiva High School
Northwest Yeshiva High School Photo
(Jewish)
(8)
5017 90th Avenue SE
Mercer Island, WA 98040
(206) 232-5272
Grades: 9-12
| 65 students
Open Window School
Open Window School Photo - We challenge, support, and trust students to do real work that matters and has an impact beyond the classroom.
(3)
6128 168th Place SE
Bellevue, WA 98006
(425) 747-2911
Grades: K-8
| 370 students
Saint George's School
Saint George's School Photo - Saint George's 120-acre campus is located along the Little Spokane River just north of Spokane, Washington.
(2)
2929 W Waikiki Road
Spokane, WA 99208
(509) 466-1636
Grades: K-12
| 311 students
Seattle Country Day School
Seattle Country Day School Photo
Special Program Emphasis
(2)
2619 4th Ave N
Seattle, WA 98109
(206) 284-6220
Grades: K-8
| 420 students
Soundview School
Soundview School Photo
Special Program Emphasis
(2)
6515 196th St SW
Lynnwood, WA 98036
(425) 778-8572
Grades: NS-8
| 159 students
Spruce Street School
Spruce Street School Photo
(4)
914 Virginia Street
Seattle, WA 98101
(206) 621-9211
Grades: K-5
| 106 students
Villa Academy
Villa Academy Photo
(Catholic)
(5)
5001 Ne 50th Street
Seattle, WA 98105
(206) 524-8885
Grades: PK-8
| 383 students
Westside School
Westside School Photo
10404 34th Avenue SW
Seattle, WA 98146
(206) 932-2511
Grades: NS-8
| 385 students
Willows Preparatory School
Willows Preparatory School Photo
(2)
12280 Woodinville Redmond Rd Ne
Redmond, WA 98052
(425) 380-5670
Grades: 5-12
| 276 students
Woodinville Montessori School - Bothell Campus
Woodinville Montessori School - Bothell Campus Photo - Woodinville Montessori School aims to prepare students for life. It offers college prep academics, personalized learning, low student-to-teacher ratio, community development, leadership, environmental and global awareness, entrepreneurship, service learning, arts, technology, electives, clubs, orienteering and more, in a collaborative and supportive environment.
Montessori School
(1)
19102 North Creek Parkway
Bothell, WA 98011
(425) 482-3184
Grades: NS-12
| 460 students
Academy For Precision Learning
Academy For Precision Learning Photo - Welcome to APL, where we celebrate neurodiversity!
Alternative School
5031 University Way Ne
Seattle, WA 98105
(206) 427-0115
Grades: K-12
| 67 students
Billings Middle School
Billings Middle School Photo - At Billings Middle School our Advisory Program supports students through the challenges of adolescence.
(12)
12351 8th Ave NE
Seattle, WA 98125
(206) 547-4614
Grades: 6-8
| 60 students
Bright Water Waldorf School
Bright Water Waldorf School Photo - Beginning in the early childhood classes, circle time and group songs connect the children with rhythm, melody, and pitch. Students rise into the early grades with flute and lyre playing. Formal subject classes for music instruction start in the fourth grade with Strings. In middle school students venture into more complex arrangements and play together in ensembles.
Special Program Emphasis
(3)
1414 South Weller Street
Seattle, WA 98144
(206) 624-6176
Grades: NS-8
| 119 students
10015 28th Ave SW
Seattle, WA 98146
(206) 935-0495
Grades: 6-8
| 109 students
French Immersion School Of Washington
French Immersion School Of Washington Photo - A Preschool Teacher and her student are playing with a toy in class.
Special Program Emphasis
(6)
4211 W Lake Sammamish Parkway Se
Bellevue, WA 98008
(425) 407-5695
Grades: NS-8
| 223 students
The Gardner School Of Arts & Sciences
The Gardner School Of Arts & Sciences Photo - The Gardner School campus sits on five beautiful acres of land in rural Clark County, easily accessible from I-5 and I-205. The grounds offer children the opportunity to explore, play, and learn in a safe, natural setting
Special Program Emphasis
(12)
16413 NE 50th Ave
Vancouver, WA 98686
(360) 574-5752
Grades: PK-6
| 103 students
Gig Harbor Academy
Gig Harbor Academy Photo
(8)
6820 32nd St NW
Gig Harbor, WA 98335
(253) 265-2150
Grades: NS-5
| 174 students
Hyla Middle School
7861 Bucklin Hill Rd Ne
Bainbridge Island, WA 98110
(206) 842-5988
Grades: 6-11
| 129 students
Show 11 more private schools in Washington (out of 46 total schools)
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