St Brigid's is typical of the early development of educational facilities in New South Wales, which were either privately operated or church run.

In the early 1930s Father Daniel Hurley, Parish Priest of St Patrick's, sought and gained permission to build another storey on top of the original classroom and chapel.

[3] The site lies on the west facing slope of Observatory Hill, a sandstone bluff which separates Sydney Cove from Darling Harbour.

[1] As at 23 April 2003, a detailed archaeological research design report was prepared and submitted with the Section 60 application as required by the General Terms of Approval issued by the Heritage Council on 13 June 2002.

[1][4] According to the archaeological research design report, until 1833 the whole site was part of an extensive sandstone quarry then in May 1835 the church building was completed and opened as a school.

[1][6] St Brigid's Roman Catholic Church & School was listed on the New South Wales State Heritage Register on 2 April 1999.