26. The Hill School – Pottstown, Pennsylvania

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  • Average SAT score: 1885
  • Endowment: $128 million
  • Accepts 32% of applicants, and 34% of students have a legacy connection to the school.
  • The Hill School has the fifth oldest rivalry in the country, dating back to 1887, with the Lawrenceville School.
  • A spirit week every fall culminates in a day of athletic competition between the two rivals.