Charles Wright Academy Photo - ACADEMIC EXCELLENCE: Our graduating seniors consistently place in the top 10% of Washington state students and matriculate to top colleges and universities. A strong college counseling program, academic challenge, access to advanced work, a developmentally appropriate progression of skills, and a commitment to service-learning ensure our students are prepared to navigate the future with confidence.

Top 10 Best Washington Private High Schools Belonging to National Association of Independent Schools (NAIS) (2025)

For the 2025 school year, there are 21 private high schools belonging to National Association of Independent Schools (NAIS) serving 9,342 students in Washington. You can also find more schools membership associations in Washington.
The top ranked private high schools belonging to National Association of Independent Schools (NAIS) in Washington include Annie Wright Schools, Holy Names Academy, and Charles Wright Academy.
The average tuition cost is $33,445, which is higher than the Washington private high school average tuition cost of $17,026.
25% of private high schools belonging to National Association of Independent Schools (NAIS) in Washington are religiously affiliated (most commonly Catholic and Christian).

Top Ranked Private High Schools Belonging to National Association of Independent Schools (NAIS) in Washington (2025)

School
Location
Grades
Students
The Bear Creek School
The Bear Creek School Photo - The Bear Creek School was founded in 1988.
(Christian)
(12)
8905 208th Avenue NE
Redmond, WA 98053
(425) 898-1720
Grades: NS-12
| 878 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
Dartmoor School
Dartmoor School Photo - One-to-One lnstruction
Alternative School
(1)
22500 SE 64th PL, #150
Issaquah, WA 98027
(425) 427-1400
Grades: 4-12
| 23 students
Dartmoor School
Dartmoor School Photo - Dartmoor Bothell Campus
Alternative School
19515 North Creek Pkwy. #208
Bothell, WA 98011
(425) 885-6296
Grades: 1-12
| 29 students
Dartmoor School
Dartmoor School Photo - Dartmoor School Seattle Campus
Alternative School
6515 15th Ave NE
Seattle, WA 98115
(425) 885-6296
Grades: 1-12
| 37 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
Forest Ridge School Of The Sacred Heart
Forest Ridge School Of The Sacred Heart Photo
All-girls (Catholic)
(2)
4800 139th Avenue SE
Bellevue, WA 98006
(425) 641-0700
Grades: 5-12
| 225 students
UPrep
UPrep Photo
(9)
8000 25th Ave NE
Seattle, WA 98115
(206) 525-2714
Grades: 6-12
| 703 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.
(2)
827 N Tacoma Ave
Tacoma, WA 98403
(253) 272-2216
Grades: NS-12
| 838 students
The Bush School
The Bush School Photo
(1)
3400 E Harrison Street
Seattle, WA 98112
(206) 326-7736
Grades: K-12
| 735 students
10613 NE 38th Place
Kirkland, WA 98033
(425) 822-5668
Grades: 5-12
| 538 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
King's Way Christian Schools
King's Way Christian Schools Photo
(Christian)
(7)
3606 NE 78th St
Vancouver, WA 98665
(360) 574-1613
Grades: NS-12
| 1,110 students
The Northwest School
(10)
1415 Summit Ave
Seattle, WA 98122
(206) 816-6032
Grades: 6-12
| 446 students
The Overlake School
The Overlake School Photo - A bird's eye view of Overlake's beautiful, lush 75 acre campus.
(2)
20301 NE 108th Street
Redmond, WA 98053
(425) 868-1000
Grades: 5-12
| 554 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 Academy
Seattle Academy Photo
Special Program Emphasis
(1)
1201 E Union Street
Seattle, WA 98122
(206) 323-6600
Grades: 6-12
| 772 students
Willows Preparatory School
Willows Preparatory School Photo
(3)
12280 Woodinville Redmond Rd Ne
Redmond, WA 98052
(425) 380-5670
Grades: 5-12
| 306 students
711 228th Ave Ne
Sammamish, WA 98074
(425) 836-1600
Grades: 6-12
| 17 students
Puget Sound Community School
Puget Sound Community School Photo
Alternative School
(3)
660 S Dearborn St
Seattle, WA 98134
(206) 324-4350
Grades: 6-12
| 34 students
Spring Street International School
Spring Street International School Photo
Special Program Emphasis
(3)
505 Spring St
Friday Harbor, WA 98250
(360) 378-6393
Grades: 6-12
| 103 students

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