The Heights School is a preparatory school for boys in grades 3–12 in Potomac, Maryland, United States. Its mission is to assist parents in the intellectual, spiritual, and physical education of their sons. The Heights School offers a liberal arts curriculum in English, mathematics, classics, history, religion, science, Spanish, art, computers, and music.

As of 2025–2026, the school had a student body of 600 and 78 total faculty. The Upper School comprises almost half of the total enrollment, with 277 students across grades 9–12. Within the Upper School, the average class size is 17 and the student-to-faculty ratio is 7:1. Opus Dei, a personal prelature of the Catholic Church, supervises the school's religious orientation and spiritual formation. The local church authority, the Roman Catholic Archdiocese of Washington, however, does not include the Heights in their list of Catholic schools. Still, the faculty for the Catholic doctrine program as well as the curriculum are reviewed and approved by the Archdiocese of Washington.