Top 100 charter schools in Wisconsin (2025)

Publicly funded charter schools. Ranked by the Success Index (US) from official American data; 100 schools shown.

#	School	Sector	Success Index (US)	Key result	Students
1	Adeline Montessori School Inc Oconomowoc · Elementary · Grades PK–8	Charter	89.9 Top 5%	1.4% Free/reduced-price lunch	211
2	Wauwatosa STEM Wauwatosa · Elementary · Grades K–5	Charter	85.9 Top 5%	87% Math proficiency	127
3	Eagleville Charter School Eagle · Elementary · Grades K–6	Charter	82.9 Top 10%	74.5% Math proficiency	95
4	Quest Charter School Ripon · Elementary · Grades 3–5	Charter	81.2 Top 10%	82% Math proficiency	157
5	New Century School Verona · Elementary · Grades K–5	Charter	80.0 Top 10%	74.5% Math proficiency	122
6	Verona Area International School Verona · Elementary · Grades K–5	Charter	78.6 Top 25%	64.5% Math proficiency	113
7	N-Vision Learning Center Necedah · Elementary · Grades 1–5	Charter	78.5 Top 25%	4.3% Free/reduced-price lunch	70
8	ACE Alliance Charter Elementary Neenah · Elementary · Grades PK–6	Charter	77.9 Top 25%	64.5% Math proficiency	225
9	High School of Health Sciences Wales · High · Grades 9–12	Charter	76.8 Top 25%	54.5% Math proficiency	176
10	Woodlands School - State Street Campus Milwaukee · Elementary · Grades PK–8	Charter	76.8 Top 25%	9.1% Free/reduced-price lunch	175
11	New Directions Learning Community Kaukauna · Elementary · Grades PK–4	Charter	76.5 Top 25%	77% Math proficiency	270
12	Waukesha Engineering Preparatory Academy Waukesha · High · Grades 9–12	Charter	76.2 Top 25%	74.5% Math proficiency	144
13	Flex Academy Little Chute · Elementary · Grades K–8	Charter	75.6 Top 25%	64.5% Math proficiency	87
14	Classical School Appleton · Elementary · Grades K–8	Charter	75.5 Top 25%	69% Math proficiency	487
15	Chain Exploration Center Waupaca · Elementary · Grades PK–8	Charter	74.9 Top 25%	64.5% Math proficiency	139
16	Between the Lakes Virtual Academy Kiel · Elementary · Grades PK–8	Charter	74.1 Top 25%	2.7% Free/reduced-price lunch	111
17	New Leaf Prep Academy Green Bay · Elementary · Grades K–8	Charter	73.9 Top 25%	4.4% Free/reduced-price lunch	225
18	Kettle Moraine Explore Wales · Elementary · Grades K–5	Charter	73.8 Top 25%	57% Math proficiency	137
19	Tesla Engineering Charter School Appleton · High · Grades 9–12	Charter	73.3 Top 25%	69.5% Math proficiency	147
20	Fox River Academy Appleton · Elementary · Grades K–8	Charter	72.7 Top 25%	67% Math proficiency	150
21	Park Community Charter School Kaukauna · Elementary · Grades PK–4	Charter	72.6 Top 25%	67% Math proficiency	256
22	KM Global Sch Wales · High · Grades 9–12	Charter	72.5 Top 25%	49.5% Math proficiency	71
23	Waukesha STEM Academy Waukesha · Elementary · Grades K–8	Charter	72.2 Top 25%	69% Math proficiency	580
24	Viroqua Area Montessori School Viroqua · Elementary · Grades PK–8	Charter	71.4 Top 25%	54.5% Math proficiency	147
25	Chippewa Valley Montessori Charter School Eau Claire · Elementary · Grades PK–5	Charter	71.3 Top 25%	62% Math proficiency	301
26	Downtown Montessori Milwaukee · Elementary · Grades PK–8	Charter	70.3 Top 25%	62% Math proficiency	218
27	La Crosse Polytechnic School La Crosse · High · Grades 6–12	Charter	70.2 Top 25%	64.5% Math proficiency	86
28	Mill Creek Academy Waukesha · Elementary · Grades PK–6	Charter	69.5 Top 25%	35.8% Free/reduced-price lunch	324
29	Northland Pines Montessori Learning Center (NPMLC) Saint Germain · Elementary · Grades PK–4	Charter	69.5 Top 25%	49.5% Math proficiency	69
30	Innovations STEM Academy Sparta · Middle · Grades 6–8	Charter	68.2 Top 25%	52% Math proficiency	90
31	Eagles' Wings Public Montessori Charter Solon Springs · Elementary · Grades PK–6	Charter	66.9 Top 50%	42.7% Free/reduced-price lunch	89
32	Maple Grove Charter School Athens · Elementary · Grades K–5	Charter	66.7 Top 50%	38.3% Free/reduced-price lunch	94
33	Core Knowledge Charter School Verona · Elementary · Grades K–8	Charter	65.8 Top 50%	54% Math proficiency	417
34	Waukesha Academy of Health Professions Waukesha · High · Grades 9–12	Charter	64.7 Top 50%	49.5% Math proficiency	112
35	LEADS Primary Charter School Shawano · Elementary · Grades PK–2	Charter	62.7 Top 50%	33.8% Free/reduced-price lunch	80
36	Mauston Montessori Charter School Mauston · Elementary · Grades PK–5	Charter	61.9 Top 50%	34.4% Free/reduced-price lunch	96
37	Discovery Charter School Columbus · Elementary · Grades K–3	Charter	60.9 Top 50%	44.5% Math proficiency	71
38	Whittier Elementary Milwaukee · Elementary · Grades PK–5	Charter	60.9 Top 50%	62% Math proficiency	146
39	Appleton Public Montessori Grand Chute · Elementary · Grades PK–6	Charter	60.4 Top 50%	47% Math proficiency	149
40	Kickapoo Valley Forest School La Farge · Elementary · Grades PK–3	Charter	59.7 Top 50%	43.9% Free/reduced-price lunch	66
41	School for Arts and Performance Wales · High · Grades 9–12	Charter	59.0 Top 50%	15% Math proficiency	114
42	Tomorrow River Community Charter Amherst Junction · Elementary · Grades PK–8	Charter	58.1 Top 50%	30% Math proficiency	184
43	Sparta Montessori School Sparta · Elementary · Grades PK–6	Charter	57.2 Top 50%	44.5% Math proficiency	161
44	Wildlands Charter School Augusta · High · Grades 6–12	Charter	56.4 Top 50%	34.5% Math proficiency	72
45	River Falls Public Montessori Academy River Falls · Elementary · Grades PK–6	Charter	56.3 Top 50%	42% Math proficiency	189
46	Tomah Area Montessori School Tomah · Elementary · Grades PK–6	Charter	55.5 Top 50%	75% Math proficiency	72
47	D C Everest Idea School Weston · High · Grades 6–12	Charter	55.3 Top 50%	34.5% Math proficiency	69
48	Woodlands School Milwaukee · Elementary · Grades PK–8	Charter	55.3 Top 50%	41% Math proficiency	313
49	Fox Valley Virtual School Menasha · Elementary · Grades PK–8	Charter	54.8 Top 50%	60% Free/reduced-price lunch	90
50	Marathon Venture Academy Marathon · Middle · Grades 6–8	Charter	54.0 Top 50%	37% Math proficiency	173
51	One City Elementary School Monona · Elementary · Grades PK–5	Charter	53.7 Top 50%	68% Free/reduced-price lunch	328
52	Fox West Academy Hortonville · Middle · Grades 6–8	Charter	53.4 Top 50%	44.5% Math proficiency	65
53	Renaissance School Appleton · High · Grades 9–12	Charter	53.3 Top 50%	34.5% Math proficiency	151
54	Wausau Area Montessori Charter School Wausau · Elementary · Grades PK–8	Charter	52.4 Top 50%	42% Math proficiency	121
55	Ouisconsing School of Collaboration Lodi · Elementary · Grades 3–5	Charter	51.9 Top 50%	47% Math proficiency	74
56	Little Chute Career Pathways Academy Little Chute · High · Grades 9–12	Charter	51.7 Top 50%	24.5% Math proficiency	93
57	Nuestro Mundo Monona · Elementary · Grades PK–5	Charter	51.5 Top 50%	42% Math proficiency	311
58	Lake Country Academy - Charter Sheboygan · Elementary · Grades PK–8	Charter	49.6 Lower 50%	37% Math proficiency	447
59	Northeast Wisconsin School of Innovation Green Bay · High · Grades 7–12	Charter	49.4 Lower 50%	65.8% Free/reduced-price lunch	228
60	Valley New School Appleton · High · Grades 7–12	Charter	49.4 Lower 50%	30% Math proficiency	68
61	School of Technology and Arts I La Crosse · Elementary · Grades PK–5	Charter	48.7 Lower 50%	42% Math proficiency	104
62	Point of Discovery School Stevens Point · High · Grades 7–12	Charter	47.3 Lower 50%	37% Math proficiency	93
63	Kaleidoscope Academy Appleton · Middle · Grades 6–8	Charter	46.7 Lower 50%	34% Math proficiency	456
64	Treffert Way for the Exceptional Mind North Fond du Lac · Elementary · Grades K–8	Charter	46.2 Lower 50%	65% Free/reduced-price lunch	60
65	Etude Elementary Sheboygan · Elementary · Grades PK–5	Charter	46.1 Lower 50%	42% Math proficiency	190
66	Bruce Guadalupe Milwaukee · Elementary · Grades PK–8	Charter	45.4 Lower 50%	72.9% Free/reduced-price lunch	1,364
67	School for Agricultural and Environmental Studies Fox Lake · Elementary · Grades PK–6	Charter	45.4 Lower 50%	37% Math proficiency	128
68	Clark Street Community School Middleton · High · Grades 9–12	Charter	45.0 Lower 50%	10% Math proficiency	108
69	Coulee Montessori Charter School La Crosse · Elementary · Grades PK–6	Charter	44.2 Lower 50%	47% Math proficiency	118
70	Harborside Academy Kenosha · High · Grades 6–12	Charter	43.8 Lower 50%	28% Math proficiency	572
71	Central Oaks Academy Wisconsin Rapids · Elementary · Grades PK–8	Charter	43.2 Lower 50%	37% Math proficiency	88
72	One City Preparatory Academy Monona · Middle · Grades 6–8	Charter	43.2 Lower 50%	72.7% Free/reduced-price lunch	99
73	School of Options and Applied Research High Eagle River · High · Grades 8–12	Charter	42.2 Lower 50%	56.9% Free/reduced-price lunch	65
74	Fox Cities Leadership Academy Appleton · High · Grades 9–12	Charter	40.3 Lower 50%	10% Math proficiency	78
75	Monona Grove Liberal Arts Monona · High · Grades 6–12	Charter	40.2 Lower 50%	24.5% Math proficiency	93
76	Fond du Lac STEM Academy Fond du Lac · High · Grades 6–12	Charter	40.1 Lower 50%	32% Math proficiency	162
77	Highland Community School Milwaukee · Elementary · Grades PK–8	Charter	39.8 Lower 50%	22% Math proficiency	387
78	Sugar Maple Nature School Saukville · Elementary · Grades K–6	Charter	38.0 Lower 50%	–	100
79	Pathways High Milwaukee · High · Grades 9–12	Charter	37.0 Lower 50%	24.5% Math proficiency	149
80	Sheboygan Leadership Academy Sheboygan · Elementary · Grades PK–8	Charter	36.9 Lower 50%	37% Math proficiency	213
81	Northwood High/Middle Minong · High · Grades 6–12	Charter	36.0 Lower 50%	27% Math proficiency	140
82	Appleton Bilingual School Appleton · Elementary · Grades K–5	Charter	35.1 Lower 50%	32% Math proficiency	139
83	Rocketship Southside Community Prep Milwaukee · Elementary · Grades PK–5	Charter	34.8 Lower 50%	32% Math proficiency	418
84	Stephen Foster Elementary Charter Appleton · Elementary · Grades PK–5	Charter	34.4 Lower 50%	27% Math proficiency	200
85	Rock University High Janesville · High · Grades 9–12	Charter	34.2 Lower 50%	24.5% Math proficiency	93
86	Northwood Elementary Minong · Elementary · Grades PK–5	Charter	33.5 Lower 50%	34.5% Math proficiency	133
87	George D Warriner High School for Personalized Learning Sheboygan · High · Grades 9–12	Charter	31.7 Lower 50%	30% Math proficiency	123
88	United Community Center Acosta Middle School Milwaukee · Middle · Grades 6–8	Charter	31.7 Lower 50%	32% Math proficiency	188
89	Milwaukee College Preparatory School -- 36th Street Campus Milwaukee · Elementary · Grades PK–8	Charter	31.5 Lower 50%	46% Math proficiency	486
90	Lemonweir Academy Mauston · High · Grades 6–12	Charter	30.9 Lower 50%	72.3% Free/reduced-price lunch	83
91	Etude Middle Sheboygan · Middle · Grades 6–8	Charter	29.2 Lower 50%	32% Math proficiency	77
92	Rocketship Transformation Prep Milwaukee · Elementary · Grades PK–5	Charter	29.0 Lower 50%	24.5% Math proficiency	313
93	John Dewey Academy of Learning Green Bay · High · Grades 6–12	Charter	28.4 Lower 50%	15% Math proficiency	134
94	Veritas High Milwaukee · High · Grades 9–12	Charter	28.1 Lower 50%	34.5% Math proficiency	256
95	Etude High Sheboygan · High · Grades 9–12	Charter	27.7 Lower 50%	24.5% Math proficiency	77
96	Honey Creek Elementary Milwaukee · Elementary · Grades PK–5	Charter	26.7 Lower 50%	37% Math proficiency	393
97	Milwaukee College Preparatory School -- Lloyd Street Milwaukee · Elementary · Grades PK–8	Charter	26.6 Lower 50%	42% Math proficiency	492
98	Carmen Middle School South Milwaukee · Middle · Grades 6–8	Charter	25.8 Lower 50%	100% Free/reduced-price lunch	191
99	Milwaukee College Preparatory School -- 38th Street Milwaukee · Elementary · Grades PK–8	Charter	25.8 Lower 50%	40% Math proficiency	474
100	Badger Rock Middle Madison · Middle · Grades 6–8	Charter	25.6 Lower 50%	12% Math proficiency	92

Adeline Montessori School Inc in Oconomowoc leads the 2025 list of charter schools in Wisconsin with a Success Index (US) of 89.9. Of the 100 schools shown, 100 are charter.

Scores are percentiles within school type, so a elementary school and a high school with the same score sit at the same point in their own distributions. Use the rankings to build a shortlist, then visit the schools and ask how they support students at your child's level.

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Frequently asked questions

What is the best charter school in Wisconsin?

Adeline Montessori School Inc in Oconomowoc ranks first among charter schools in Wisconsin with a Success Index (US) of 89.9 out of 100 (Enrollment: 211).

How are charter schools in Wisconsin ranked?

Each school's Success Index (US) combines 4 factors: math proficiency (30%), reading proficiency (30%), community advantage (fewer free/reduced-price lunch) (25%), students per teacher (15%). Each factor is a percentile against schools of the same type across United States. Schools with fewer than 60 students are excluded from rankings.

Are these 2025 rankings official?

No. They are computed by Success Tutoring from official American data (Urban Institute Education Data Portal (NCES CCD, EDFacts); NCES Common Core of Data). States set their own assessments and proficiency cut scores, so proficiency rates are most comparable within a state. Use the state rankings for like-for-like comparisons.