St. Gabriel's School in Waverley, originally known as Preston College, was founded by the Community of the Sisters of the Church in 1912. This Anglican order of nuns, led by Sister Emily Ayckbown, aimed to provide education and care to children, ensuring both academic excellence and moral development. The school's official inauguration occurred on July 29, 1912, with Lady Chelmsford presiding over the event.

Initially located in "Preston," a Victorian mansion, the school was later named St. Gabriel's in honor of the patron saint of the Sisters. The campus expanded with the acquisition of "Glenbournie" in 1914, becoming St. Michael's House. A chapel, named Saint Michael and All Angels, was added to the campus in 1919.

Over the years, the school evolved, integrating students from St. Mary's Sunday school and establishing the St. Gabriel's Old Girls' Union in 1918. In 1925, Saint Raphael's wing was added, and the school briefly expanded to Canberra from 1927 to 1933. During World War II, it temporarily relocated outside Goulburn.

Sadly, due to a shortage of teaching sisters, the school closed in 1966, leaving a legacy of education and community service. Today, Waverley Library holds many objects from St. Gabriel's School, preserving its history for future generations to explore.