It was founded by Mary Loving Blair, who served as the first head of school until 1980, when she was re-placed by Gloria Snyder.

Students are expected to take a course of study which meets the entry requirements of major colleges and universities.

The Parish Midway campus is centered around a 337,000-square-foot (31,300 m2) academic building designed by an architecture team of I.M.

The original Hillcrest Campus is located approximately 5 miles (8.0 km) east of Midway Road on the grounds of the Church of the Transfiguration.

Parish Episcopal School is now governed by a board of trustees, a percentage of whom[quantify] are members of the church.