SchoolsPrivate schools › King County

Westside School

Private school · Seattle, King County · grades PK-8 · nonsectarian

Snapshot

K-12 enrollment
328
SBE-reported, 2024-25
Tuition (top division)
$29,900
2026-27, school-published

Identity and approval

Campus
Westside School, 10404 34th Ave SW, Seattle 98146
Host public district
Seattle School District
Grades
PK-8
Religious affiliation
nonsectarian
Coed / single-sex
coed
Accreditation
NWAIS
Website
https://www.westsideschool.org
WA SBE approval
2026-27 (state-approved private school)
Profit status
Nonprofit

Enrollment

K12345678
383739373634393632

Enrollment by grade, 2024-25 school year, as reported to the WA State Board of Education.

Tuition and financial aid

Annual tuition
$29,900 (2026-27)
By division / fees
Early Learning $23,500; K-4 $26,900; 5-8 $29,900.
Financial aid
~24% of students receive financial support; average award $14,500; awards $900-$28,100.

Source: the school's own tuition page · aid page, observed 2026-07-03. Tuition changes annually, verify before applying.

Academics

Curriculum
PK-8 independent school.
Washington private schools are not required to publish state assessment results, and this school's internal test data is not public. Unlike the public-school pages on this site, no score comparison is possible here, treat curriculum labels and matriculation lists as the available evidence.

Research dossier

Westside School

Independent school in Arbor Heights, West Seattle · preschool through grade 8 · 328 K-8 students plus 54 early learners (WA SBE, 2024-25) · nonsectarian, progressive, NWAIS-accredited

The verdict

Westside's pitch is built on what it refuses to do. There are no letter grades, no homework before 2nd grade, no admissions test, no cut lists in sports, and, most consequentially for a buyer, no published high-school matriculation list. What you get instead is a coherent progressive package at the accessible end of Seattle independent pricing. Middle school costs $29,900 for 2026-27, roughly ten to twenty thousand below the city's premium tier. The package includes Spanish and Mandarin exposure starting in preschool, a seven-person student support team that is oversized for a 380-child school, and childcare logistics built for working parents, including 43 extra care days on non-school days starting in 2026-27. The bet a family makes here is on trust. The school deliberately strips out every external yardstick (test scores, grades, competition results, placement statistics), so you are buying the philosophy and the accreditors' judgment rather than a number. Families west of the Duwamish who want a calm, well-run K-8 will find a lot to like here. Families who need proof their child is tracking ahead of a national cohort will find nothing to measure with.

Researched 2026-07-04. Citations and claim ledger included in the full dossier.

That is the free excerpt. The full dossier covers what the school's own marketing won't: admissions mechanics and real selectivity, all-in cost and aid behavior, matriculation depth, culture and fit signals, institutional health, every claim cited and dated. Unlock it for $9, or get a $29 Research Pass with 3 dossiers included.

The real comparison is against your public options.

Tuition here runs five figures a year, the question is what it buys over the public schools your address already gives you. A $29 Research Pass unlocks score trends, peer percentiles, competition evidence, gifted-pathway detail, and PTA capacity on every public school in the region, plus 3 full research dossiers for the schools on your shortlist.

See pricing

Sources

Weighing private against public?

Get an email when new private-school data or dossiers are published, a few times a season, nothing else.