For the 2025-26 school year, there are 2 private schools serving 109 students in Lake County, SD (there are 15 public schools, serving 2,041 public students). 5% of all K-12 students in Lake County, SD are educated in private schools (compared to the SD state average of 9%).
The top ranked private school in Lake County, SD is St. Thomas School.
The average acceptance rate is 100%, which is higher than the South Dakota private school average acceptance rate of 79%.
Top Ranked Lake County Private Schools (2025-26)
School
Location
Quick Facts
St. Thomas School
(Catholic)
401 N Van Eps Ave
Madison, SD 57042
(605) 256-4419
Madison, SD 57042
(605) 256-4419
Gr: PK-5 | 74 students Tuition listed
Madison Christian School
(Christian)
45369 234th St
Madison, SD 57042
(605) 427-0109
Madison, SD 57042
(605) 427-0109
Gr: PK-4 | 35 students Tuition & acceptance rate listed
Frequently Asked Questions
What are the top ranked private schools in Lake County, SD?
The top ranked private schools in Lake County, SD is St. Thomas School.
How many private schools are located in Lake County?
2 private schools are located in Lake County.
What percentage of students in Lake County go to private school?
5% of all K-12 students in Lake County are educated in private schools (compared to the SD state average of 9%).
Recent Articles
Transferring from Public to Private School Mid-Year: What to Expect
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.
A Guide to Day vs. Boarding School: Which Is Right for Your Family
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.
The A to Z of Private Schools 2025
Explore the A to Z of private schools in 2025—from admissions to tuition—offering parents and educators clear insights into today’s options.