Hai Sing Catholic School (HSC) is a co-educational government-aided Catholic secondary school in Pasir Ris, Singapore. Founded by the Franciscan Missionaries of Mary (FMM) sisters in 1959, it is affiliated to Catholic Junior College. History Hai Sing Girls' High School (1959-1990) Hai Sing Catholic School was founded in 1959 by the Franciscan Missionaries of Mary (FMM) sisters as Hai Sing Girls' High School with 170 students. Lessons were initially conducted at Convent Primary School in Punggol. It was the first girls' high school in Serangoon and the second Catholic one in Singapore. From 1960 to 1961, a three-storey building was constructed at the mile mark of Upper Serangoon, with an office, science laboratories, 18 classrooms and a common room for teachers. In 1972, a new 800-seat school hall was constructed. Six years later, the school was named one of the 14 outstanding Chinese secondary schools in Singapore and was initially included as a candidate school for the Special Assistance Plan (SAP). However, with the concern from the Ministry of Education over the surplus of school places that might hinder the success of the scheme, the number of SAP schools were amended to nine, which excluded Hai Sing, along with three other institutions. Later in 1978, Hai Sing was named one of the 14 outstanding Chinese Secondary Schools in Singapore. In 1981, Hai Sing Girls' High School started taking in English stream students and was converted from a Chinese medium school to an integrated school. In 1984, the school celebrated its Silver Jubilee. Hai Sing High School (1990-1999) In January 1990, Hai Sing Girls' High School changed its policy to admit male students, as well as students of other races. As such, the school name was changed to Hai Sing High School and went co-educational. In March 1990, the school moved from Upper Serangoon Road into Pasir Ris New Town, with the official opening ceremony held on 11 July 1992. Progress as Hai Sing Catholic School (1999 – present) On 11 July 1999, Hai Sing High School changed its name to its current name, Hai Sing Catholic School, to emphasise its Catholic status. The school emblem was also modified. In 2008, Hai Sing Catholic School won multiple achievement awards for their outstanding academic and non-academic (Co-curricular activity-related) achievements. Academic awards include an Honour Roll for the Sustained Achievement Award and a regular Achievement Award. They were also one of the select