When she retired in 1952, she was its Principal. Dingle after completing her teaching course at Truro returned to Holloway School in 1915 where she taught Kindergarten until her retirement in 1952. Over the next two years she visited other schools in Truro, Montreal and England to become acquainted with their methods and programmes.
Dingle went on to teach at the Vera Perlin School until age 77.
In 1949 she received an Administration Member of the Order of the British Empire for her dedication, certificates of merit from both schools and an honorary life membership of the Newfoundland Teachers" Association.