St Marys DSG Pretoria Pre-School is located in Pretoria. St Mary's Diocesan School for Girls, which was originally known as St Etheldreda's, was founded by Bishop Bousfield, the first Bishop of Pretoria, in 1879. Initially it was situated at No 279 Skinner Street, but after about 40 years, it moved to its present site in Hillcrest.

The first Anglican Bishop of Pretoria, Bishop Bousfield, established St Mary's DSG in 1879. From 1905 to 1975 the school was run and cared for by the Sisters of the Community of St Mary the Virgin (CSMV) whose mother house remains in the town of Wantage in England.

The influence of the CSMV in the school remains deeply rooted and the relationship remains strong. The role of the Chapel is central in the life of the school both geographically and functionally. Two chaplains tend to the spiritual needs of the school community.

Girls of all denominations and religions are welcome at the school. Attendance at chapel services and Divinity lessons is obligatory.

Deep traditions continue year by year: the ringing of the Angelus bell at midday calling all to prayer; the sacrificial giving of the school during Lent, especially in the knitting of blankets for the poor; a strong competitive House system providing a smaller internal home for the girls; the Anglo Catholic tradition at the celebration of The Eucharist; and strong support of Irene Homes (also a CSMV project) are examples that spring to mind.