For the 2025-26 school year, there are 3 private schools serving 338 students in Dekalb, IL (there are 10 public schools, serving 5,927 public students). 5% of all K-12 students in Dekalb, IL are educated in private schools (compared to the IL state average of 12%).
The top ranked private school in Dekalb, IL is St. Mary School.
33% of private schools in Dekalb, IL are religiously affiliated (most commonly Catholic).
Considering a mid-year transfer from public to private school? Learn what to expect with admissions, academic placement, social adjustment, and financial aid to ensure a smooth transition.
Discover the key differences between day and boarding schools to determine the best fit for your child. Explore benefits, costs, lifestyle factors, and questions to help guide your family’s decision.
