For the 2026 school year, there are 16 private high schools belonging to NWAIS (Northwest Association of Independent Schools) serving 5,630 students in Washington. You can also find more schools membership associations in Washington.
The top-ranked private high schools belonging to NWAIS (Northwest Association of Independent Schools) in Washington include Annie Wright Schools, Holy Names Academy, and Eastside Catholic School.
The average tuition cost is $31,351, which is higher than the Washington private high school average tuition cost of $17,416.
Top-Ranked Private High Schools Belonging to NWAIS (Northwest Association of Independent Schools) in Washington (2026)
School
Location
Quick Facts
7723 Chambers Creek Rd W University Place
University Place, WA 98467
(253) 620-8373
University Place, WA 98467
(253) 620-8373
Gr: PK-12 | 578 students Avg. class size: 14 students Sports: 11 | Extracurrculars: 47 Tuition & acceptance rate listed
232 228th Avenue SE
Sammamish, WA 98074
(425) 295-3000
Sammamish, WA 98074
(425) 295-3000
Gr: 6-12 | 836 students Avg. class size: 19 students Sports: 19 | Extracurrculars: 22 Tuition & acceptance rate listed
The Northwest School
(10)
1415 Summit Ave
Seattle, WA 98122
(206) 816-6032
Seattle, WA 98122
(206) 816-6032
Gr: 6-12 | 446 students Avg. class size: 17 students Sports: 6 | Extracurrculars: 14 Tuition & acceptance rate listed
22500 SE 64th PL, #150
Bellevue, WA 98027
(425) 885-6296
Bellevue, WA 98027
(425) 885-6296
Gr: 1-12 | 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
827 N Tacoma Ave
Tacoma, WA 98403
(253) 272-2216
Tacoma, WA 98403
(253) 272-2216
Gr: NS-12 | 902 students Avg. class size: 14 students Sports: 8 | Extracurrculars: 30 Tuition listed
728 21st Ave E
Seattle, WA 98112
(206) 323-4272
Seattle, WA 98112
(206) 323-4272
Gr: 9-12 | 575 students Avg. class size: 21 students Sports: 17 Tuition & acceptance rate listed
5017 90th Avenue SE
Mercer Island, WA 98040
(206) 232-5272
Mercer Island, WA 98040
(206) 232-5272
Gr: 9-12 | 65 students Avg. class size: 12 students Sports: 5 | Extracurrculars: 11 Tuition listed
2929 W Waikiki Road
Spokane, WA 99208
(509) 466-1636
Spokane, WA 99208
(509) 466-1636
Gr: K-12 | 311 students Avg. class size: 12 students Sports: 10 | Extracurrculars: 16 Tuition & acceptance rate listed
8000 25th Ave NE
Seattle, WA 98115
(206) 525-2714
Seattle, WA 98115
(206) 525-2714
Gr: 6-12 | 746 students Avg. class size: 18 students Sports: 8 | Extracurrculars: 7 Tuition listed
12280 Woodinville Redmond Rd Ne
Redmond, WA 98052
(425) 380-5670
Redmond, WA 98052
(425) 380-5670
Gr: 5-12 | 306 students Sports: 8 | Extracurrculars: 15 Tuition listed
19102 North Creek Parkway
Bothell, WA 98011
(425) 482-3184
Bothell, WA 98011
(425) 482-3184
Gr: NS-12 | 459 students Avg. class size: 20 students Sports: 7 | Extracurrculars: 25 Tuition listed
Academy For Precision Learning ![Academy For Precision Learning Photo - Welcome to APL, where we celebrate neurodiversity!]( "Academy For Precision Learning Photo - Welcome to APL, where we celebrate neurodiversity!")
Alternative School
1432 15th Ave
Seattle, WA 98122
(206) 427-0115
Seattle, WA 98122
(206) 427-0115
Gr: K-12 | 67 students Avg. class size: 7 students Extracurrculars: 2 Tuition listed
7861 Bucklin Hill Rd Ne
Bainbridge Island, WA 98110
(206) 842-5988
Bainbridge Island, WA 98110
(206) 842-5988
Gr: 6-11 | 129 students Avg. class size: 15 students Sports: 4 Tuition listed
Jefferson Community School ![Jefferson Community School Photo - JCS in Nepal 2017]( "Jefferson Community School Photo - JCS in Nepal 2017")
Special Program Emphasis
280 Quincy St Ste I
Port Townsend, WA 98368
(360) 385-0622
Port Townsend, WA 98368
(360) 385-0622
Gr: 7-12 | 16 students Avg. class size: 10 students Tuition & acceptance rate 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
3310 146th Pl SE Suite B
Bellevue, WA 98007
(206) 236-1095
Bellevue, WA 98007
(206) 236-1095
Gr: 4-12 | 134 students Avg. class size: 1 student Tuition & acceptance rate listed
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