1 to 3 setting up food and games stalls. Before the event, students are given tickets to sell to relatives and family for the event funding. A lucky draw is also held where participants can win multiple goods and prizes. A blood donation drive led by the school's St John's Brigade (CCA group) is also held. Students of the school who are 16 years or older can donate, including members of the public such as parents, or alumni who attend the Carnival. There is a lucky draw held at the end of the carnival for all ticket holders, where students, the public and teachers can win multiple prizes. Overseas trips and exchange programmes Annually, the schools organises overseas trips for its students to Vietnam, Malaysia, China and Indonesia. The school also organises an annual exchange programme with Sagano High School in Kyoto, Japan which usually takes place in June. Academic Information Being an integrated secondary school running a standard academic curriculum, Hai Sing Catholic School offers three academic streams, namely the four-year Express course, as well as the Normal Course, comprising Normal (Academic) and Normal (Technical) academic tracks. O Level Express Course The Express Course is a nationwide four-year programme that leads up to the Singapore-Cambridge GCE Ordinary Level examination. Academic subjects The examinable academic subjects for Singapore-Cambridge GCE Ordinary Level offered by Hai Sing Catholic School for the upper secondary level (via. streaming in secondary 2 level), as of 2019, are listed below. Notes: Subjects indicated with ' * ' are mandatory subjects. All students in Singapore are required to undertake a Mother Tongue Language as an examinable subject, as indicated by ' ^ '. "SPA" in Pure Science subjects refers to the incorporation of School-based Science Practical Assessment, which 20% of the subject result in the national examination is determined by school-based practical examinations, supervised by the Singapore Examinations and Assessment Board. The SPA Assessment has been replaced by one Practical Assessment in the 2018 “O” Levels. Normal Courses The Normal Course is a nationwide 4-year programme leading to the Singapore-Cambridge GCE Normal Level examination, which runs either the Normal (Academic) curriculum or Normal (Technical) curriculum, abbreviated as N(A) and N(T) respectively. Normal (Academic) Course In the Normal (Academic) course, students in Hai Sing Catholic School normally offer 6-7 subjects in the Singapore-Cambridge GCE Normal Level examination. Compulsory subjects include: English Language Mother Tongue Language Mathematics Combined Humanities