Most Selective Boarding Schools

Among "Schools with 200-400 Students", view the boarding schools with the lowest acceptance rates (2025).

Acceptance rates listed below reflect the average rate of acceptance for all applicants (boarding and day applicants) in the previous year.

Keep in mind that acceptance rates may be lower or higher than the average acceptance rate depending on: what grade you are applying for, whether you are a boarding applicant or day student applicant, and the time of year you are applying.

Schools typically have the most openings for freshmen and sophomores (many schools do not accept incoming seniors), so applying for entrance into 9th or 10th grade may improve your chances of admission.

Acceptance rates between boarding applicants and day student applicants may differ (i.e., schools in certain areas may a higher ratio of day student applicants to day student openings, versus boarding applicants to boarding openings; the acceptance rate of some schools will actually be lower for day applicants and higher for boarding applicants).

Many, but not all, schools will accept applications after application deadlines, but admission generally becomes more difficult.

Berkshire School Photo - Founded in 1907, Berkshire School is a coed college preparatory boarding and day school for 425 ninth-12th graders and post-graduates, offering a forward-thinking curriculum and state-of-the-art facilities on a 400-acre campus in Sheffield, Mass.

Brooks School Photo - Come visit our beautiful 251 acre campus located on the shores of Lake Cochichewick.

St. Andrew's School, DE Photo - Our 2100 acre campus is located in Middletown, DE just a short drive from Philadelphia, Baltimore, and Washington, D.C.

St. George's School Photo - Seaside Campus overlooking the Atlantic Ocean

The Thacher School Photo - In courses designed for intellectual and creative expansion, students and teachers meet in seminar circles, studios, and laboratories to create a learning environment that is vigorous and supportive, galvanizing and nurturing.

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

The Williston Northampton School Photo - Williston promises an academic culture that respects your ability to think for yourself and gives you the right balance of structure and freedom to make the most of it. You'll be immersed in a challenging curriculum that cultivates active, lifelong learning. And with an average class size of 13 students, your teachers are truly going to know you.

Kimball Union Academy Photo - One of the many opportunities for community service is the unique opportunity to train for the Fire Brigade and become be part of the Meriden Fire and Rescue Team.

The Madeira School Photo - Madeira's 376-acre campus in McLean, Virginia, overlooks the Potomac River from a perch just 12 miles northwest of Washington, D.C.

Asheville School Photo - Since its founding in 1900, generations of students have looked within themselves and discovered the mettle required to succeed at this school.

Indian Mountain School Photo - Indian Mountain School

Proctor Academy Photo - A community built on authentic relationships.

The Winchendon School Photo - Winchendon scores!

Acceptance Rate Range: 15% 97% Avg. Acceptance Rate: 57%

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