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Best Indiana Private Schools Belonging to Independent Schools Association of the Central States (ISACS) (2025)

For the 2025 school year, there are 18 private schools belonging to Independent Schools Association of the Central States (ISACS) serving 8,912 students in Indiana. You can also find more schools membership associations in Indiana.

The private schools belonging to Independent Schools Association of the Central States (ISACS) in Indiana include Brebeuf Jesuit Preparatory School, Culver Academies, and La Lumiere School.

The average tuition cost is $21,497, which is higher than the Indiana private school average tuition cost of $10,561.

39% of private schools belonging to Independent Schools Association of the Central States (ISACS) in Indiana are religiously affiliated (most commonly Catholic and Christian).

The Oaks Academy Photo - Middle School students pause for a photo in the hallway during passing period.

International School Of Indiana Photo - A group of students walking in the annual International Parade where the ISI community celebrates the many cultures and backgrounds that make up our community.

Cathedral High School Photo - Cathedral High School's college-like campus sits on 40-acres of woods and rolling hills.

Oak Farm Montessori School Photo - Oak Farm Montessori is the ONLY infant through high school dual accredited Montessori School in the United States. In addition, our program boasts a 150+ acre campus; rich with opportunities. We invite you to visit our one of a kind campus to experience for yourself, the vision and values deeply rooted in our school for our students to thrive!

Culver Academies Photo - An aerial view of Memorial Chapel and Lake Maxinkuckee. Situated on 1,800 acres of green hills and pristine woodlands, Culver's storied campus is home to three distinct leadership-development experiences: Culver Military Academy, Culver Girls Academy, and Culver Summer Schools and Camps.

La Lumiere School Photo - La Lumiere School is a private, independent boarding and day school founded in 1963, located in La Porte, Indiana, on an idyllic 190-acre wooded campus.

Park Tudor School Photo - Travel opportunities for students include trips to France, Spain, Uruguay, China, and cities throughout the U.S.

University High School of Indiana Photo - University High School students are friendly and welcoming. Students are often friends with students in every grade.

Trinity School At Greenlawn Photo - A love for music is evident at Trinity. Students combined their love of the school and their love of Les Miserables into the school's first music video. See it here: http://www.youtube.com/watch?v=laL9du84rac.

Sycamore School Photo - Sycamore School in Indianapolis, Indiana

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