allk12 · Rankings · Largest charters · Washington · King County

The largest public charter schools in King County, Washington

This ranking covers the largest public charter schools in King County, Washington, drawn from 8 qualifying public schools. Summit Public School: Atlas leads the list at 566, against a median of 287 across the ranked schools.

The table below is sortable and filterable, and the full list downloads as a CSV. Figures come from federal NCES enrollment data and, where applicable, state assessment results for 2024-25.

Schools ranked

King County, Washington

Top Students

566

Median Students

287

LARGEST CHARTERS · KING COUNTY, WASHINGTON

#	School	City	District	Level	Students
1	Summit Public School: Atlas	Seattle, WA	Summit Public School: Atlas	High	566
2	Impact Public Schools	Tukwila, WA	Impact \| Puget Sound Elementary	Elementary	505
3	Impact \| Salish Sea Elementary	Seattle, WA	Impact \| Salish Sea Elementary	Elementary	385
4	Rainier Prep	Seattle, WA	Rainier Prep Charter School District	Middle	359
5	Summit Public School: Sierra	Seattle, WA	Summit Public School: Sierra	High	214
6	Impact \| Black River Elementary	Renton, WA	Impact \| Black River Elementary	Elementary	209
7	Cascade Public Schools	Des Moines, WA	Why Not You Academy	High	126
8	Rainier Valley Leadership Academy	Seattle, WA	Rainier Valley Leadership Academy	Combined	121

Page 1 of 1 · top 8 of 8 ranked. NCES + state assessment data, 2024-25.↓ Download full CSV

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DATA NOTICE

allk12 is independent and not affiliated with, endorsed by, or sponsored by NCES, the US Census Bureau, any state education agency or assessment program, or any other government agency. Source data is compiled from public records and provided "as is," without warranty of accuracy or completeness. You rely on it, and any analysis derived from it, at your own risk. See the full disclaimer.