The Devon Preparatory School site was originally owned by Philadelphia publisher,[4] art collector,[5] and socialite[6] Charles Matthew Lea, who built his mansion in 1913 that was later to become Calasanctius Hall.

[4] The firm's best-known title was the American edition of Gray's Anatomy, which they began publishing in 1859.

Several stone pillars that initially formed a southern fence line remain partially in place along West Conestoga and Upper Gulph Roads.

An outbuilding from Westthorpe Farm still stands northeast of the intersection of Upper Gulph and Hunters Lane.

The 25-room Westthorpe mansion,[7] designed by Brockie & Hastings,[8] was the home of Charles M. Lea until he died in 1927.

Shand sold the mansion to Joseph Lerner, who had hoped to make it a psychiatric hospital.

[9] In August 2023, the school announced that Father Francisco Aisa would be stepping down as headmaster to return to his home country of Spain.

They attend classes including algebra readiness, digital photography, painting and sculpting, video production, study skills, web building, and history explorations.