26. The Hill School – Pottstown, Pennsylvania
- 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.