Private School Review - Established 2003
BASIS Independent School of Bellevue Top 3 · Highest Avg. SAT Score (WA)
Sacred Heart School
St. Luke School

Best Washington Private Schools Belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) (2026-27)

For the 2026-27 school year, there are 6 private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) serving 1,646 students in Washington. You can also find more schools membership associations in Washington.
The top ranked private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) in Washington include Sacred Heart School, BASIS Independent School of Bellevue, and St. Luke School.
The average acceptance rate is 90%, which is higher than the Washington private school average acceptance rate of 82%.
83% of private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) in Washington are religiously affiliated (most commonly Catholic and Assembly of God).

Quick Facts (2026-27)

  • # Private Schools: 6

Quick Facts (2026-27)

  • # Private Schools: 6

Top Ranked Private Schools Belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) in Washington (2026-27)

BASIS Independent School of Bellevue Photo
BASIS Independent School of Bellevue
Gr: K-12 | 331 students
Avg. class size: 20 students
Sports: 8 | Extracurriculars: 30
15749 NE 4th Street
Bellevue, WA 98008
(425) 906-5199
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Sacred Heart School Photo
Sacred Heart School
Gr: PK-8 | 444 students
Avg. class size: 22 students
Sports: 5 | Extracurriculars: 4
Catholic
9450 N.E. 14th Street
Bellevue, WA 98004
(425) 451-1773
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St. Luke School Photo
St. Luke School
Gr: PK-8 | 372 students
Avg. class size: 17 students
Sports: 8 | Extracurriculars: 12
Catholic
17533 Saint Luke Place N
Seattle, WA 98133
(206) 542-1133
(2)
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Gateway Christian Schools Photo
Gateway Christian Schools
Gr: PK-5 | 144 students
Avg. class size: 16 students
Extracurriculars: 2
Assembly of God
705 NE Lincoln Road
Poulsbo, WA 98370
(360) 779-9189
(2)
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Map of St. Michael Catholic School
St. Michael Catholic School
Gr: PK-8 | 163 students
Catholic
1514 Pine Ave
Snohomish, WA 98290
(360) 568-0821
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St. Nicholas Catholic School Photo
St. Nicholas Catholic School
Gr: PK-8 | 192 students
Avg. class size: 16 students
Sports: 3
Catholic
3555 Edwards Dr
Gig Harbor, WA 98335
(253) 858-7632
(8)
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Frequently Asked Questions

What are the top ranked private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) in Washington?
The top ranked private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) in Washington include Sacred Heart School, BASIS Independent School of Bellevue, and St. Luke School.
How many private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) are located in Washington?
6 private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) are located in Washington.
How diverse are private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) in Washington?
Washington private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) are approximately 37% minority students, which is higher than the Washington private school average of 32%.
What percentage of private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) are religiously affiliated in Washington?
83% of private schools belonging to Western Association of Schools and Colleges (Accrediting Commission for Schools) (ACS WASC) in Washington are religiously affiliated (most commonly Catholic and Assembly of God).
6
Private Schools
1,646
Students
$16,468
Avg. Tuition
37%
Students of Color
13:1
Student-Teacher Ratio

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