The cathedral also has a Parochial Vicar, two resident priests, Director of Religious Education, Youth Minister and Music & Liturgy Coordinator.

[5] It currently offers grade levels pre-kindergarten through eighth[6] and has approximately 400 students.

[3] The school was operated by the Sisters, Servants of the Immaculate Heart of Mary who established a permanent community at St. Thomas More August 25, 1945.

[7] To mark the Diocese of Arlington's 50th anniversary, Bishop Michael Burbidge announced an extensive renovation of the cathedral.

Architecturally, the building will be transformed from a Mid-century Modern design from when it was built to the Tudor style prominent when St. Thomas More was alive.