University School of Milwaukee Photo - The iconic tower on the USM campus.

Top 5 Best Wisconsin Private High Schools Belonging to Independent Schools Association of the Central States (ISACS) (2025)

For the 2025 school year, there are 9 private high schools belonging to Independent Schools Association of the Central States (ISACS) serving 3,802 students in Wisconsin. You can also find more schools membership associations in Wisconsin.
The top ranked private high schools belonging to Independent Schools Association of the Central States (ISACS) in Wisconsin include Eastbrook Academy, Edgewood High School Of The Sacred Heart, and University School of Milwaukee.
The average acceptance rate is 59%, which is lower than the Wisconsin private high school average acceptance rate of 87%.
33% of private high schools belonging to Independent Schools Association of the Central States (ISACS) in Wisconsin are religiously affiliated (most commonly Christian and Episcopal).

Top Ranked Private High Schools Belonging to Independent Schools Association of the Central States (ISACS) in Wisconsin (2025)

School
Location
Grades
Students
The Prairie School
The Prairie School Photo - Learning and growing. It's at the heart of everything we do. This is where your child will learn to create, collaborate, and communicate. Where they will become equipped with the tools to think, reason, write, and question. This is where your child will take ownership of their dreams while chasing down their passions. This is Prairie.
(3)
4050 Lighthouse Drive
Racine, WI 53402
(262) 752-2500
Grades: PK-12
| 638 students
Wayland Academy
Wayland Academy Photo
101 N University Avenue
Beaver Dam, WI 53916
(920) 885-3373
Grades: 9-12
| 200 students
Eastbrook Academy
Eastbrook Academy Photo
(Christian)
(3)
5375 N Green Bay Avenue
Milwaukee, WI 53209
(414) 228-7905
Grades: PK-12
| 387 students
2219 Monroe St
Madison, WI 53711
(608) 257-1023
Grades: 9-12
| 528 students
5606 River Road
Waunakee, WI 53597
(608) 850-6000
Grades: PK-12
| 391 students
St. John's Northwestern Academies
St. John's Northwestern Academies Photo
Special Program Emphasis (Episcopal)
1101 Genesee Street
Delafield, WI 53018
(262) 646-7199
Grades: 6-12
| 180 students
University Lake School
University Lake School Photo
(3)
4024 Nagawicka Road
Hartland, WI 53029
(262) 263-8011
Grades: NS-12
| 302 students
2100 W Fairy Chasm Rd
Milwaukee, WI 53217
(414) 352-6000
Grades: PK-12
| 1,142 students
Open Wings Learning Community
Open Wings Learning Community Photo - Our very low student-to-teacher ratio allows individualized, hands-on, experiential learning for every student.
Special Education School
13022 Wilmot Road
Kenosha, WI 53142
(262) 697-7744
Grades: K-12
| 34 students

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