SchoolsPrivate schools › King County

Seattle Preparatory School

Private school · Seattle, King County · grades 9-12 · Catholic (Jesuit)

Snapshot

K-12 enrollment
800
SBE-reported, 2024-25
Tuition (top division)
$30,175
2026-27, school-published

Identity and approval

Campus
Seattle Preparatory School — 2400 11th Ave E, Seattle 98102
Host public district
Seattle School District
Grades
9-12
Religious affiliation
Catholic (Jesuit)
Coed / single-sex
coed
Website
https://www.seaprep.org
WA SBE approval
2026-27 (state-approved private school)
Profit status
Nonprofit

Enrollment

9101112
208191203198

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

Tuition and financial aid

Annual tuition
$30,175 (2026-27)
By division / fees
Registration fee $650; activity fee $675; required laptop ~$2,100 (freshman year).
Financial aid
Need-based tuition assistance grants (no merit scholarships); Fulcrum Foundation grants available.

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

Academics

Curriculum
AP + College in the High School credit; integrated humanities (Collegio) grades 9-11.
College matriculation
Publishes annual college acceptance articles.
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.

Competition evidence

Known results compiled from public competition listings (National Merit press lists, tournament PDFs, The Blue Alliance). A missing result is not evidence of absence.

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.