For the 2025-26 school year, there are 3 private schools serving 238 students in Mountainside, NJ (there are 2 public schools, serving 748 public students). 24% of all K-12 students in Mountainside, NJ are educated in private schools (compared to the NJ state average of 14%).
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.
