| 9 | 10 | 11 | 12 |
|---|---|---|---|
| 245 | 260 | 260 | 223 |
Enrollment by grade, 2024-25 school year, as reported to the WA State Board of Education.
Source: the school's own tuition page · aid page, observed 2026-07-03. Tuition changes annually, verify before applying.
Known results compiled from public competition listings (National Merit press lists, tournament PDFs, The Blue Alliance). A missing result is not evidence of absence.
Catholic archdiocesan school in Seattle's Green Lake neighborhood · grades 9–12 · 988 students (WA SBE, 2024-25) · coed college-prep, Archdiocese of Seattle
Blanchet occupies a deliberate middle lane in Seattle's private-school market: bigger, cheaper, and more structured than the secular independents, less cloistered than the single-gender Catholic academies. At $25,300 for 2026-27, roughly half of Lakeside's sticker, the school sells "balance," and the mechanics back the marketing: 36 athletic teams in the brutal Metro League, 28 Honors and Advanced Placement (AP) courses, and mandatory theology and service for all 988 students. Two structural facts deserve more attention than the brochure gives them. The High School Placement Test doesn't just admit your child, it tracks them. Test results plus middle school grades set initial placement in English, math, and science, so the honors question is settled before day one. And Blanchet bans Running Start, the state program that sends public-school juniors to community college for free credit, replacing it with in-house University of Washington and Seattle University courses. That policy keeps seniors on campus and keeps rigor under the school's roof. Families wanting a big, spirited, rules-forward community tend to thrive here, including the roughly 40% of students who aren't Catholic. Families needing curriculum modification, or expecting independent-school college machinery, should probe harder.
Researched 2026-07-04. Citations and claim ledger included in the full dossier.
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