Tormore House had its origins in a small school for girls set up by Elizabeth McMinn and her two sisters Sarah Hamill "Sally" McMinn and Martha McMinn, on Molesworth Street, North Adelaide in 1876. This may have been their family home, in which their father Joseph died two years earlier. In February 1884 the McMinn sisters moved their school to another property on nearby Buxton Street, which they dubbed "Tormore" for their birthplace in Ireland. It had been John Whinham's North Adelaide Grammar School, which he relinquished to move to larger premises at the corner of Ward and Jeffcott Streets. The school was taken over by Ann and Caroline Jacob towards the end of 1897, and the McMinn sisters left Adelaide on 15 December, retiring to Ealing Common, England. The school moved to new premises at 211 Childers Street in January 1899, with a house for boarders alongside. In 1907 Caroline Jacob took over the Unley Park Grammar School and ran the two institutions concurrently. Around this time substantial improvements were made: separate facilities for the younger students and additional premises for boarders, art studies and a kindergarten. Caroline Jacob's father financed the construction of a gymnasium, which also served as a large meeting-hall. School enrolments declined alarmingly during World War I; negotiations with Bishop Nutter Thomas for incorporation into the Church education system came to nothing, and in 1918 the school moved to smaller premises in Barton Tce. and the Childers Street premises became the "Andover" residential flats; the School closed in 1920. "Andover" later became the site of the Kindergarten Teachers College, then the Kingston College of Advanced Education in 1974. A Tormore Old Scholars' Association was active from at least 1906 to 1954, and a reunion held in 1936 exclusively of the McMinn sisters' students, attracted over 60 old scholars.
Notable students
Esther Gwendolyn "Stella" Bowen one of three women appointed official war artists WWII
Phyllis Dorothy Cilento née McGlew
Francisca Adriana "Paquita" Delprat, daughter of G. D. Delprat and wife of Douglas Mawson
Arabella Aldersey Manning married Charles Mather Leumane on 21 December 1907. She was drawing teacher, 1900 to 1907. He was an operatic tenor and singing teacher; James Riley was a notable student.
Mary A. Overbury prominent artist. Later had her own school at Hawthorn.