Abby Jackson/Business Insider
Phillips Academy receives 3,000 applications each year but only accepts about 13%.
The admissions committee looks for characteristics of optimism, social agility, perseverance, and resilience in applicants.
The school calls an applicant with top scores from the admissions team an "admit six."
It's not easy to gain acceptance to Phillips Academy, the Andover, Massachusetts boarding school pegged as the best high school in America.
Of the more than 3,000...