Westtown School is boarding, college preparatory, and a coeducational school in Chester County, Pennsylvania. It serves students from grades PK-12. It was founded in 1799 by the Religious Society of Friends and currently has 802 students.

It is a Quaker school, and students are required to attend religious service once a week, twice a week for boarding students. Their publication is Epiphanies. Boarding options are available at high school levels and required for grades 11-12.

Westtown School has many student activities, with 27 varsity teams and their mascot is a moose.

There are also arts, global education, and college counseling. In addition, students can learn about sustainability through the curriculum and operations on campus. It makes for a well-rounded education.