St. Mark's School Photo - St. Mark's School

Best Southborough Private Schools (2025-26)

For the 2025-26 school year, there are 3 private schools serving 614 students in Southborough, MA (there are 4 public schools, serving 1,304 public students). 32% of all K-12 students in Southborough, MA are educated in private schools (compared to the MA state average of 12%).
The top ranked private schools in Southborough, MA include St. Mark's School and Fay School.
The average acceptance rate is 29%, which is lower than the Massachusetts private school average acceptance rate of 71%.
33% of private schools in Southborough, MA are religiously affiliated (most commonly Episcopal).

Top Ranked Southborough Private Schools (2025-26)

School
Location
Quick Facts
Fay School
Fay School Photo - Fay School is located on a 66-acre campus 25 miles from Boston in Southborough, Massachusetts, and is the oldest junior boarding school in the United States. Fay currently serves students in Kindergarten through grade nine, with an optional boarding program starting in grade seven.
(9)
48 Main Street
Southborough, MA 01772
(508) 490-8201
Gr: K-9 Avg. class size: 14 students Sports: 16 | Extracurrculars: 14 Tuition listed
St. Mark's School
St. Mark's School Photo - St. Mark's School
(Episcopal)
(2)
25 Marlboro Road
Southborough, MA 01772
(508) 786-6000
Gr: 9-12 | 383 students Avg. class size: 11 students Sports: 15 | Extracurrculars: 74 Tuition & acceptance rate listed
The New England Center For Children
Special Education School
33 Turnpike Rd
Southborough, MA 01772
(508) 481-1015
Gr: Inquire with school | 231 students Tuition listed

Frequently Asked Questions

What are the top ranked private schools in Southborough, MA?
The top ranked private schools in Southborough, MA include St. Mark's School and Fay School.
How many private schools are located in Southborough?
3 private schools are located in Southborough.
What percentage of students in Southborough go to private school?
32% of all K-12 students in Southborough are educated in private schools (compared to the MA state average of 12%).
What percentage of private schools are religiously affiliated in Southborough?
33% of private schools in Southborough are religiously affiliated (most commonly Episcopal).

Recent Articles

Transferring from Public to Private School Mid-Year: What to Expect
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
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
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.