allk12 · Rankings · Largest charters · Wisconsin · Middle schools

The largest public charter schools in Wisconsin

Across Wisconsin, 16 public middle schools are ranked here, ranked by total enrollment among charter schools. Kaleidoscope Academy leads the list at 456, against a median of 71 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

Wisconsin

Top Students

456

Median Students

LARGEST CHARTERS · WISCONSIN

#	School	City	District	Level	Students
1	Kaleidoscope Academy	Appleton, WI	Appleton Area School District	Middle	456
2	Carmen Middle School South	Milwaukee, WI	Carmen High School of Science and Technology Inc	Middle	191
3	United Community Center Acosta Middle School	Milwaukee, WI	United Community Center Inc	Middle	188
4	Marathon Venture Academy	Marathon, WI	Marathon City School District	Middle	173
5	One City Preparatory Academy	Monona, WI	One City Schools Inc	Middle	99
6	Badger Rock Middle	Madison, WI	Madison Metropolitan School District	Middle	92
7	Innovations STEM Academy	Sparta, WI	Sparta Area School District	Middle	90
8	Etude Middle	Sheboygan, WI	Sheboygan Area School District	Middle	77
9	Fox West Academy	Hortonville, WI	Hortonville Area School District	Middle	65
10	Accelerated Advanced Learning Program	Oshkosh, WI	Oshkosh Area School District	Middle	59
11	School of Options and Applied Research Middle	Land O' Lakes, WI	Northland Pines School District	Middle	43
12	George D Warriner Middle	Sheboygan, WI	Sheboygan Area School District	Middle	43
13	School of Technology and Arts II	La Crosse, WI	La Crosse School District	Middle	39
14	Fremont STEM Academy Inc.	Fremont, WI	Weyauwega-Fremont School District	Middle	34
15	Central Wisconsin STEM Academy	Nekoosa, WI	Nekoosa School District	Middle	32
16	Lakeland STAR School--Strong Talented Adventurous Remarkable	Minocqua, WI	Minocqua J1 School District	Middle	2

Page 1 of 1 · top 16 of 16 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.