[2] According to its website, Seton teaches orthodox, traditional Catholicism in harmony with the Magisterium of the Catholic Church and its leader, Pope Francis.

In 1975, Mrs. Carroll moved the school from Warrenton to Manassas, Virginia and renamed it after St. Elizabeth Ann Seton, who was canonized the same year.

Further expansions have included the dedication of the St. Joseph's wing in 1992, the John Paul II Center which was opened in 1994 and houses the school gym, the Our Lady of the Rosary wing in 1995, and finally the Corpus Christi Center in 2006.

Following the 2006 expansion, the junior high part of the school was moved into the Corpus Christi Center.

Included in this curriculum are several college level courses that, while not official AP courses, consistently enable the students to score 3 or higher on AP exams in the subject areas of Calculus, Economics, English Language, English Literature, Physics, Statistics, and United States Government.