Bethany College was founded in 1993 as a result of the amalgamation of two girls’ schools: St Mary’s Star of the Sea, Hurstville, which had been established by the Sisters of Charity in 1895, and St Joseph’s Girls’ High School, Kogarah, an old school which had been developed into a high school by the Sisters of St Joseph, who had come to Kogarah in 1914. Both schools had provided
for Years 7-10 girls. Today the school is a high school for girls from Years 7–12.