SchoolsPrivate schools › King County

Lakeside School

Private school · Seattle, King County · grades 5-12 · nonsectarian

Snapshot

K-12 enrollment
874
SBE-reported, 2024-25
Tuition (top division)
$52,000
2026-27, school-published
Student-teacher ratio
8.7:1
NCES PSS, 2021-22
Teachers (FTE)
100
NCES PSS, 2021-22

Identity and approval

Campuses
Lakeside School (Middle) — 13510 1st Ave NE, Seattle 98125
Lakeside School (Upper) — 14050 1st Ave NE, Seattle 98125
Host public district
Shoreline School District
Grades
5-12
Religious affiliation
nonsectarian
Coed / single-sex
coed
Accreditation
NWAIS
Website
https://www.lakesideschool.org
WA SBE approval
2026-27 (state-approved private school)
Profit status
Nonprofit

Enrollment

56789101112
34858584150147147142

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

Tuition and financial aid

Annual tuition
$52,000 (2026-27)
By division / fees
Single rate for grades 5-12; aid covers non-tuition costs (food, books, bus, laptop, trips) for recipients.
Financial aid
2025-26: $10M need-based tuition aid + $600K+ non-tuition aid; ~30% of students receive aid; recipient family incomes $15K to $250K+.

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

Academics

Curriculum
No AP or IB by design (program positioned at/above AP rigor); 135 upper-school courses.
College matriculation
No published matriculation list; 100+ college admission officers visit campus annually.
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.

Student demographics

Asian
33%
Black
10%
Hispanic
4%
White
34%

NCES Private School Universe Survey, 2021-22 (the most recent federal collection). Private-school demographics are reported biennially and lag public-school data.

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.

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Sources

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