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Top 20 Best Washington Private Schools Belonging to NWAIS (Northwest Association of Independent Schools) (2025)

For the 2025 school year, there are 47 private schools belonging to NWAIS (Northwest Association of Independent Schools) serving 11,769 students in Washington. You can also find more schools membership associations in Washington.

The private schools belonging to NWAIS (Northwest Association of Independent Schools) in Washington include Holy Names Academy, Charles Wright Academy, and Annie Wright Schools.

The average tuition cost is $27,712, which is higher than the Washington private school average tuition cost of $15,271.

13% of private schools belonging to NWAIS (Northwest Association of Independent Schools) in Washington are religiously affiliated (most commonly Catholic and Jewish).

Eastside Catholic School Photo - The Eastside Catholic School campus is situated on 50 acres on Sammamish plateau and surrounded by protected wetlands and forest.

Charles Wright Academy Photo - ACADEMIC EXCELLENCE: Our graduating seniors consistently place in the top 10% of Washington state students and matriculate to top colleges and universities. A strong college counseling program, academic challenge, access to advanced work, a developmentally appropriate progression of skills, and a commitment to service-learning ensure our students are prepared to navigate the future with confidence.

French American School of Puget Sound Photo - Students learn in French and English with FASPS's harmonized bilingual program

Yellow Wood Academy Photo - Some of our Upper School students learn to grow as a team while off at Winter Camp!

Silverwood School Photo - Welcome to Silverwood School!

Woodinville Montessori School - Woodinville Campus (Early Childhood only) Photo - One of the gardens on the Woodinville Campus where the Early Childhood (preschool and Kindergarten) children, ages 3-6, enjoy all of the hands-on experiences that gardening provides.

Jewish Day School Of Metropolitan Seattle Photo - JDS has a competitive athletics program for students in Grades 5th to 8th including soccer, volleyball, and basketball.

Woodinville Montessori School - Bothell Campus Photo - The Montessori Elementary Program (grades 1-6) provides the 6-12-year-old child limitless opportunities to apply his great powers of imagination and capacity for hard work. The deeper concentration, increased attention span, good organizational skills and self-direction that are often a result of the Montessori Early Childhood classroom allow these children to take on some rather complex projects.

Saint George's School Photo - Saint George's 120-acre campus is located along the Little Spokane River just north of Spokane, Washington.

Billings Middle School Photo - Billings Middle School is part of the Cascade Middle School League for sports.

The Gardner School Of Arts & Sciences Photo - The Gardner School campus sits on five beautiful acres of land in rural Clark County, easily accessible from I-5 and I-205. The grounds offer children the opportunity to explore, play, and learn in a safe, natural setting

https://www.etonschool.org Photo - Students at Eton School love to learn!

Bright Water Waldorf School Photo - Bright Water Waldorf School is located in the historic Capitol Hill neighborhood of Seattle. The campus is just one block away from beautiful Volunteer Park and overlooks Lake Union.

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