Montessori Children's House Photo - Our beautiful outdoor environment inspires awe, wonder and imagination in young children.

Top 5 Best Washington Private Schools Belonging to National Council for Private School Accreditation (2025)

For the 2025 school year, there are 8 private schools belonging to National Council for Private School Accreditation serving 1,425 students in Washington. You can also find more schools membership associations in Washington.
The top ranked private schools belonging to National Council for Private School Accreditation in Washington include Walla Walla Valley Academy, Olympia Christian School, and Cascade Christian Academy.
The average acceptance rate is 82%, which is higher than the Washington private school average acceptance rate of 81%.
75% of private schools belonging to National Council for Private School Accreditation in Washington are religiously affiliated (most commonly Seventh Day Adventist).

Top Ranked Private Schools Belonging to National Council for Private School Accreditation in Washington (2025)

School
Location
Grades
Students
Olympia Christian School
Olympia Christian School Photo
(Seventh Day Adventist)
(1)
1215 Ethel St NW
Olympia, WA 98502
(360) 352-1831
Grades: PK-8
| 43 students
Buena Vista SDA School
(Seventh Day Adventist)
3320 Academy Drive SE
Auburn, WA 98092
(253) 833-0718
Grades: PK-8
| 227 students
Cascade Christian Academy
Cascade Christian Academy Photo - CCA high school students on Make A Difference Day, cleaning up at Camp Zanika.
(Seventh Day Adventist)
(5)
600 N Western Ave
Wenatchee, WA 98801
(509) 662-2723
Grades: PK-12
| 444 students
Lewis County Adventist School
Lewis County Adventist School Photo - We are in a quiet and beautiful country setting, just outside the city limits of Chehalis. Grades offered are Preschool-10th. Our school sits on a hill and has a fantastic view of Mt. Rainier, Mt. St. Helens and Mt. Adams.
(Seventh Day Adventist)
(3)
2102 S. Scheuber Rd.
Chehalis, WA 98532
(360) 748-3213
Grades: PK-10
| 78 students
The Sammamish Montessori School
The Sammamish Montessori School Photo - Students delve into a variety of hands-on math work that help them to solidly grasp the concept of quantity and math equations. In this case a kindergarten student has completed the Birds Eye View math work quantifying golden beads from one to 9,999.
Montessori School
(1)
7655 178th Place Ne
Redmond, WA 98052
(425) 883-3271
Grades: PK-1
| 250 students
Walla Walla Valley Academy
(Seventh Day Adventist)
300 Sw Academy Way
College Place, WA 99324
(509) 525-1050
Grades: 9-12
| 128 students
Yakima Adventist Christian School
Yakima Adventist Christian School Photo
(Seventh Day Adventist)
1200 City Reservoir Rd
Yakima, WA 98908
(509) 966-1933
Grades: PK-10
| 91 students
Montessori Children's House
Montessori Children's House Photo - Our Elementary students on our climbing boulder.
Montessori School
(1)
5003 218th Ave Ne
Redmond, WA 98053
(425) 868-7805
Grades: NS-6
| 164 students

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