According to The Association of Boarding Schools (TABS):

Boarding schools are independent, college preparatory schools that provide residential facilities for students and faculty. They are sometimes referred to as "intentional communities" because faculty and staff strive to create a secure environment for students that is academically challenging, active, and fun.

Well known for academic excellence, with small class sizes, diverse curricula, and individual attention from teachers and advisors, the boarding school experience affords students numerous significant advantages. Boarding school students acquire the abilities that help ensure success in college and in life.

During the academic year, boarding schools become extended families where teachers and students live and learn together. The 24-hour community of this close-knit environment allows the faculty to seize every teachable moment, whether in the classroom, on the playing field or court, or in the dormitory.

According to the Ten Schools Admissions Organization (TSAO):

The TSAO member schools are a group of distinguished college preparatory schools that often collaborate in their outreach to prospective students and their families. Although these schools offer a range of experiences and traditions, they each have the highest standards in terms of personal and academic excellence.