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Seattle Christian School

Private school · SeaTac, King County · grades K-12 · Christian (interdenominational)

Snapshot

K-12 enrollment
657
SBE-reported, 2024-25
Tuition (top division)
$16,650
2025-26, school-published
Student-teacher ratio
12.9:1
NCES PSS, 2021-22
Teachers (FTE)
39
NCES PSS, 2021-22

Identity and approval

Campus
Seattle Christian School, 18301 Military Rd S, SeaTac 98188
Host public district
Highline School District
Grades
K-12
Religious affiliation
Christian (interdenominational)
Coed / single-sex
coed
Accreditation
ACSI; Cognia (renewed 2025 for six years)
Website
https://www.seattlechristian.org
WA SBE approval
2026-27 (state-approved private school)
Profit status
Nonprofit

Enrollment

K123456789101112
33414138474764606866695627

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

Tuition and financial aid

Annual tuition
$16,650 (2025-26)
By division / fees
1st child: K-3 $12,950; 4-6 $13,800; 7-8 $15,750; 9-12 $16,650; sibling discounts up to 4th child free.
Financial aid
Indexed Tuition program offers income-based discounted rates.

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

Academics

Curriculum
AP + dual-credit courses; Puget Sound Skills Center programs.
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
13%
Black
18%
Hispanic
3%
White
53%

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

Research dossier

Seattle Christian School

Interdenominational Christian day school in SeaTac · grades K–12 · 657 students (WA SBE, 2024-25) · college-prep academics inside a conservative evangelical framework

The verdict

Seattle Christian's offer is easy to state and genuinely rare in this market: a complete K–12 private education on one campus for $12,950 to $16,650 a year (2025-26), roughly a third of what Seattle's secular independents charge. Beneath that sits a sliding "Indexed Tuition" scale, and the fourth simultaneously enrolled child attends free. The catch is not hidden fees. It is that the product and the theology are inseparable. Every employee signs a Statement of Faith holding scripture inerrant, every applicant family affirms it, and every subject from biology to literature is taught through it. Two things should slow down even well-aligned families. First, the school publishes almost no outcome evidence: no matriculation lists, no test averages, no Advanced Placement pass rates. Second, the 2024-25 senior class numbered just 27 students in a high school where grades 9 through 11 run 56 to 69. Families who share the faith and want it woven through the entire school day will find unusual value here. Families shopping primarily on academic evidence are being asked to buy largely on trust.

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.

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Sources

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