For the 2025-26 school year, there are 20 private high schools belonging to Northwest Association of Accredited Schools serving 3,971 students in Washington. You can also find more schools membership associations in Washington.
The top ranked private high schools belonging to Northwest Association of Accredited Schools in Washington include Auburn Adventist Academy, Walla Walla Valley Academy, and Forest Ridge School Of The Sacred Heart.
The average tuition cost is $25,711, which is higher than the Washington private high school average tuition cost of $17,467.
50% of private high schools belonging to Northwest Association of Accredited Schools in Washington are religiously affiliated (most commonly Christian and Seventh Day Adventist).
Top Ranked Private High Schools Belonging to Northwest Association of Accredited Schools in Washington (2025-26)
School
Location
Quick Facts
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
4588 Klahanie Dr SE Suite 401
Issaquah, WA 98029
(425) 836-1600
Issaquah, WA 98029
(425) 836-1600
Gr: 1-12 Avg. class size: 1 student Tuition listed
Dartmoor School![Dartmoor School Photo - One-to-One instruction helps students excel]( "Dartmoor School Photo - One-to-One instruction helps students excel")
Alternative School
2800 Northup Way, Suite 120
Bellevue, WA 98004
(425) 885-6296
Bellevue, WA 98004
(425) 885-6296
Gr: 1-12 | 43 students Avg. class size: 1 student Tuition & acceptance rate listed
22500 SE 64th PL, #150
Issaquah, WA 98027
(425) 427-1400
Issaquah, WA 98027
(425) 427-1400
Gr: 4-12 | 23 students Avg. class size: 1 student Tuition & acceptance rate listed
Dartmoor School![Dartmoor School Photo - Dartmoor School Seattle Campus]( "Dartmoor School Photo - Dartmoor School Seattle Campus")
Alternative School
6515 15th Ave NE
Seattle, WA 98115
(425) 885-6296
Seattle, WA 98115
(425) 885-6296
Gr: 1-12 | 37 students Avg. class size: 1 student Tuition & acceptance rate listed
Dartmoor School![Dartmoor School Photo - Dartmoor Bothell Campus]( "Dartmoor School Photo - Dartmoor Bothell Campus")
Alternative School
19515 North Creek Pkwy. #208
Bothell, WA 98011
(425) 885-6296
Bothell, WA 98011
(425) 885-6296
Gr: 1-12 | 29 students Avg. class size: 1 student Tuition & acceptance rate listed
4800 139th Avenue SE
Bellevue, WA 98006
(425) 641-0700
Bellevue, WA 98006
(425) 641-0700
Gr: 5-12 | 225 students Avg. class size: 12 students Sports: 13 | Extracurrculars: 29 Tuition listed
5000 Auburn Way S
Auburn, WA 98092
(253) 939-5000
Auburn, WA 98092
(253) 939-5000
Gr: 9-12 | 239 students Avg. class size: 25 students Sports: 12 | Extracurrculars: 10 Tuition & acceptance rate listed
4012 Chico Way NW
Bremerton, WA 98312
(360) 377-7700
Bremerton, WA 98312
(360) 377-7700
Gr: K-12 | 302 students Avg. class size: 16 students Sports: 7 | Extracurrculars: 8 Tuition listed
8521 67th Avenue NE
Marysville, WA 98270
(360) 659-8517
Marysville, WA 98270
(360) 659-8517
Gr: K-12 | 473 students Avg. class size: 21 students Sports: 5 | Extracurrculars: 5 Tuition & acceptance rate listed
Mount Vernon Christian School![Mount Vernon Christian School Photo]( "Mount Vernon Christian School Photo")
(Christian)
820 W Blackburn Rd
Mount Vernon, WA 98273
(360) 424-9157
Mount Vernon, WA 98273
(360) 424-9157
Gr: PK-12 | 502 students Avg. class size: 21 students Sports: 6 | Extracurrculars: 6 Tuition & acceptance rate listed
802 Terry Avenue
Seattle, WA 98104
(206) 923-7551
Seattle, WA 98104
(206) 923-7551
Gr: 9-12 | 500 students Avg. class size: 25 students Sports: 10 Tuition listed
721 Keys Road
Yakima, WA 98901
(509) 965-2602
Yakima, WA 98901
(509) 965-2602
Gr: NS-12 | 423 students Avg. class size: 17 students Sports: 8 | Extracurrculars: 2 Tuition listed
1201 E Union Street
Seattle, WA 98122
(206) 323-6600
Seattle, WA 98122
(206) 323-6600
Gr: 6-12 | 772 students Avg. class size: 18 students Sports: 13 | Extracurrculars: 25 Tuition & acceptance rate listed
Walla Walla Valley Academy
(Seventh Day Adventist)
300 Sw Academy Way
College Place, WA 99324
(509) 525-1050
College Place, WA 99324
(509) 525-1050
Gr: 9-12 | 128 students Avg. class size: 15 students Sports: 7 | Extracurrculars: 6 Tuition & acceptance rate listed
Yakima Adventist Christian School![Yakima Adventist Christian School Photo]( "Yakima Adventist Christian School Photo")
(Seventh Day Adventist)
1200 City Reservoir Rd
Yakima, WA 98908
(509) 966-1933
Yakima, WA 98908
(509) 966-1933
Gr: PK-10 | 91 students Avg. class size: 18 students
1215 Fourth Avenue, Ste 1500
Seattle, WA 98161
(855) 550-2547
Seattle, WA 98161
(855) 550-2547
Gr: 9-12 Tuition listed
Brightmont Academy - Redmond![Brightmont Academy - Redmond 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 - Redmond 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.")
Alternative School
7345 164th Ave NE, Ste I-135
Redmond, WA 98052
(425) 373-0800
Redmond, WA 98052
(425) 373-0800
Gr: 1-12 Avg. class size: 1 student Extracurrculars: 1 Tuition listed
115 NE 100th St #200
Seattle, WA 98125
(206) 284-2300
Seattle, WA 98125
(206) 284-2300
Gr: 1-12 Avg. class size: 1 student Tuition listed
1111 S Carr Road
Renton, WA 98055
(142) 522-6371
Renton, WA 98055
(142) 522-6371
Gr: 4-12 | 50 students Avg. class size: 8 students Extracurrculars: 5 Tuition listed
Yellow Wood Academy![Yellow Wood Academy Photo - We are so proud of our YWA graduates!]( "Yellow Wood Academy Photo - We are so proud of our YWA graduates!")
Special Education School
9655 SE 36th Street,
Mercer Island, WA 98040
(206) 236-1095
Mercer Island, WA 98040
(206) 236-1095
Gr: K-12 | 134 students Avg. class size: 1 student Tuition & acceptance rate listed
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