 STS also saw a high percentage of her graduates entering other famous secondary schools in HK, like Wah Yan College, Kowloon, La Salle College, Diocesan Boys' School and Maryknoll Convent School.School Founder Mrs. Maria Lourdes Bau announced her retirement after serving 45 years as the Principal of the School.In 2002, STS celebrated its 50th Anniversary.