Private School Review - Established 2003
Dartmoor School
Evergreen Academy Preschool & Elementary School of Bothell
West Sound Academy

Washington Private Schools Belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia)

For the 2026-27 school year, there are 61 private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) serving 16,681 students in Washington. You can also find more schools membership associations in Washington.
The top ranked private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) in Washington include Auburn Adventist Academy, All Saints Elementary School, and BASIS Independent School of Bothell.
The average tuition cost is $19,739, which is higher than the Washington private school average tuition cost of $15,172.
52% of private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) in Washington are religiously affiliated (most commonly Christian and Catholic).

Quick Facts (26-27)

  • # Private Schools: 61

Quick Facts (26-27)

  • # Private Schools: 61

Top Ranked Private Schools Belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) in Washington (2026-27)

BASIS Independent School of Bothell Photo
BASIS Independent School of Bothell
Gr: PK-12 | 322 students
Sports: 3 | Extracurriculars: 23
21540 30th Drive SE
Bothell, WA 98021
(425) 484-1579
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Brightmont Academy - Sammamish Photo
Brightmont Academy - Sammamish
Gr: 1-12
Avg. class size: 1 student
Specialized Curriculum
4588 Klahanie Dr SE Suite 401
Issaquah, WA 98029
(425) 836-1600
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Brighton School of Mountlake Terrace Photo
Brighton School of Mountlake Terrace
Gr: PK-8 | 327 students
Avg. class size: 18 students
Sports: 6 | Extracurriculars: 2
21705 58th Avenue West
Mountlake Terrace, WA 98043
(425) 584-2361
(2)
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Fusion Academy Seattle Photo
Fusion Academy Seattle
Gr: 5-12
Sports: 1 | Extracurriculars: 6
214 E. Galer Street, Suite 200
Seattle, WA 98102
(206) 486-3614
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Northshore Christian Academy Photo
Northshore Christian Academy
Gr: NS-8 | 1,131 students
Avg. class size: 21 students
Sports: 6 | Extracurriculars: 17
Christian
5700 23rd Drive West
Everett, WA 98203
(425) 407-1119
(6)
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Silverwood School Photo
Silverwood School
Gr: K-8 | 87 students
Avg. class size: 20 students
Extracurriculars: 6
14000 Central Valley Rd NW
Poulsbo, WA 98370
(360) 697-7526
(27)
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Bel-Red Bilingual Academy Photo
Bel-Red Bilingual Academy
Gr: PK-3 | 107 students
Avg. class size: 12 students
15061 Bel Red Rd
Bellevue, WA 98007
(425) 283-0717
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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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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 | 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 | 29 students
Avg. class size: 1 student
Alternative School
19515 North Creek Pkwy. #208
Bothell, WA 98011
(425) 885-6296
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Evergreen Academy Preschool & Elementary School of Bothell Photo
Evergreen Academy Preschool & Elementary School of Bothell
Gr: NS-5 | 175 students
Extracurriculars: 7
16017 118th Place NE
Bothell, WA 98011
(425) 600-3048
(5)
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West Sound Academy Photo
West Sound Academy
Gr: 6-12 | 94 students
Avg. class size: 16 students
Extracurriculars: 12
16571 Creative Drive NE
Poulsbo, WA 98370
(360) 598-5954
(12)
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Map of All Saints Elementary School
All Saints Elementary School
Gr: PK-8 | 343 students
Avg. class size: 22 students
Sports: 4 | Extracurriculars: 5
Catholic
504 2nd Street Sw
Puyallup, WA 98371
(253) 845-5025
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All-Star Academy Photo
All-Star Academy
Gr: PK-12
Avg. class size: 8 students
Extracurriculars: 1
Alternative School
30355 SE High Point Way
Issaquah, WA 98027
(425) 526-4600
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Auburn Adventist Academy Photo
Auburn Adventist Academy
Gr: 9-12 | 239 students
Avg. class size: 25 students
Sports: 12 | Extracurriculars: 10
Seventh Day Adventist
5000 Auburn Way S
Auburn, WA 98092
(253) 939-5000
(3)
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Map of Bethlehem Lutheran School
Bethlehem Lutheran School
Gr: PK-8 | 286 students
Avg. class size: 24 students
Sports: 8
Lutheran Church Missouri Synod
2505 W. 27th Ave.
Kennewick, WA 99337
(509) 582-5624
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Brightmont Academy - Redmond Photo
Brightmont Academy - Redmond
Gr: 1-12
Avg. class size: 1 student
Extracurriculars: 1
Alternative School
7345 164th Ave NE, Ste I-135
Redmond, WA 98052
(425) 373-0800
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Brightmont Academy - Seattle Photo
Brightmont Academy - Seattle
Gr: 1-12
Avg. class size: 1 student
Extracurriculars: 8
115 NE 100th St #200
Seattle, WA 98125
(206) 284-2300
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Concordia Christian Academy Photo
Concordia Christian Academy
Gr: K-12 | 217 students
Avg. class size: 18 students
Sports: 7 | Extracurriculars: 11
Lutheran Church Missouri Synod
202 E 56th Street
Tacoma, WA 98404
(253) 475-9513
(5)
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Crosspoint Christian School Photo
Crosspoint Christian School
Gr: K-12 | 302 students
Avg. class size: 16 students
Sports: 7 | Extracurriculars: 8
Christian
4012 Chico Way NW
Bremerton, WA 98312
(360) 377-7700
(2)
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Evergreen Christian School Photo
Evergreen Christian School
Gr: PK-8 | 287 students
Avg. class size: 20 students
Sports: 6 | Extracurriculars: 2
Assembly of God
1010 Black Lake Blvd Sw
Olympia, WA 98502
(360) 357-5590
(2)
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Explorations Academy Photo
Explorations Academy
Gr: 6-12 | 48 students
Avg. class size: 10 students
Alternative School
1701 Ellis St # 215
Bellingham, WA 98225
(360) 671-8085
(2)
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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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Grace Academy Photo
Grace Academy
Gr: K-12 | 473 students
Avg. class size: 21 students
Sports: 5 | Extracurriculars: 5
Christian
8521 67th Avenue NE
Marysville, WA 98270
(360) 659-8517
(2)
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Map of Holy Family Catholic School
Holy Family Catholic School
Gr: PK-8 | 140 students
Catholic
1002 Chestnut Street
Clarkston, WA 99403
(509) 758-6621
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Hope Lutheran School Photo
Hope Lutheran School
Gr: PK-8 | 192 students
Avg. class size: 18 students
Sports: 6 | Extracurriculars: 14
Lutheran Church Missouri Synod
4456 42nd Ave Sw
Seattle, WA 98116
(206) 935-8500
(3)
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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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Lighthouse Christian School Photo
Lighthouse Christian School
Gr: K-8 | 488 students
Avg. class size: 20 students
Sports: 6 | Extracurriculars: 9
Christian
3008 36th St Nw
Gig Harbor, WA 98335
(253) 858-5962
(3)
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Mount Vernon Christian School Photo
Mount Vernon Christian School
Gr: PK-12 | 502 students
Avg. class size: 21 students
Sports: 6 | Extracurriculars: 6
Christian
820 W Blackburn Rd
Mount Vernon, WA 98273
(360) 424-9157
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Northwest Yeshiva High School Photo
Northwest Yeshiva High School
Gr: 9-12 | 65 students
Avg. class size: 12 students
Sports: 5 | Extracurriculars: 11
Jewish
5017 90th Avenue SE
Mercer Island, WA 98040
(206) 232-5272
(8)
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Map of O'dea High School
O'dea High School
Gr: 9-12 | 500 students
Avg. class size: 25 students
Sports: 10
All-boys (Catholic)
802 Terry Avenue
Seattle, WA 98104
(206) 923-7551
(1)
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Renton Prep Christian: Microsoft's First US K-12 Flagship School Participant Photo
Renton Prep Christian: Microsoft's First US K-12 Flagship School Participant
Gr: PK-5 | 75 students
Avg. class size: 12 students
Lutheran Church Missouri Synod
200 Mill Avenue South Suite 110
Renton, WA 98057
(206) 723-5526
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Riverside Christian School Photo
Riverside Christian School
Gr: NS-12 | 423 students
Avg. class size: 17 students
Sports: 8 | Extracurriculars: 2
Christian
721 Keys Road
Yakima, WA 98901
(509) 965-2602
(3)
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Map of St. Charles Borromeo Catholic School
St. Charles Borromeo Catholic School
Gr: PK-8 | 502 students
Avg. class size: 25 students
Sports: 4 | Extracurriculars: 2
Catholic
7112 S 12th St
Tacoma, WA 98465
(253) 564-5185
(2)
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Show 26 more private schools in Washington (out of 61 total schools)
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Frequently Asked Questions

What are the top ranked private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) in Washington?
The top ranked private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) in Washington include Auburn Adventist Academy, All Saints Elementary School, and BASIS Independent School of Bothell.
How many private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) are located in Washington?
61 private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) are located in Washington.
How much do private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) cost in Washington?
The average tuition cost is $19,739, which is higher than the Washington private school average tuition cost of $15,172.
How diverse are private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) in Washington?
Washington private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) are approximately 33% minority students, which is higher than the Washington private school average of 32%.
What percentage of private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) are religiously affiliated in Washington?
52% of private schools belonging to Cognia (formerly AdvancED / SACS CASI / NCA CASI) (Cognia) in Washington are religiously affiliated (most commonly Christian and Catholic).
62
Private Schools
16,681
Students
$19,739
Avg. Tuition
33%
Students of Color
12:1
Student-Teacher Ratio

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