The school song was written in 1947 by St. Raphael, Sr. Elizabeth of Portugal and Sr. St. Bertha. Sr. Elizabeth of Portugal was the Principal at that time while the other two were taking their drop in school on mission. Sr. St. Raphael chose the melody of a flower song as the backbone. Sr. St. Bertha, the musician, helped with some modifications and rearrangements while Sr. St. Raphael herself and Sr. Elizabeth of Portugal filled in the words.
And the school song, which lasts for about 5 minutes, is classified as the longest school song in Hong Kong.
The school offers both Arts and Science streams in S4 and S5 for HKCEE and in S6 and S7 for the HKALE. A more balanced curriculum is offered in S1 to S3. Lessons are conducted through the medium of English except Chinese Language, Chinese History and Putonghua.
St. Clare's motto is "''Veritas Vincit''", or "Truth Conquers".
The Missionary Sisters of Our Lady of the Angels had this vision when they chose St. Clare as the school Patron. "CLARE" means "BRIGHT LIGHT". So for the Clarians, to be this brightly shining light, entails: truth, honesty, loyalty, fidelity; simplicity without guile; wanting the best while giving the best of one's self.
It's uniform was once the prettiest uniform in Hong Kong by winning a uniform competition.