St. Joseph's Institution International

St. Joseph's Institution International was founded in 2007 by alumni of St. Joseph's Institution, the Singapore school started by the De La Salle Brothers in 1852. The high school opened with about 100 students, and an elementary school followed on the same site in 2008. Both share a campus at 490 Thomson Road, near Caldecott MRT, with visitor access from Toa Payoh West. A preschool has been added since. The school is raising funds for a new purpose-built campus in Serangoon and plans to move there in 2030, subject to final approvals.

The Elementary School takes children from Prep 1 to Grade 6 and offers a mainstream programme and an English–Mandarin bilingual programme. Under government rules, it is currently open to foreign students but not to Singapore citizens. The High School admits both local and international students from Grade 7. It teaches the Cambridge IGCSE up to Grade 10, with a Foundation IB option, and the IB Diploma in Grades 11 and 12. Pastoral care, service learning and faith formation are central to school life, and students of all faiths are welcome.

The school reports more than 2,100 students from over 40 nationalities, with a majority of high-school students Singaporean. For 2026, total annual fees including GST are about S$39,900–40,200 for mainstream elementary, S$41,000 for Grades 7–8 and S$42,000 for Grades 9–10. Grade 11 costs S$51,166 and Grade 12 costs S$43,580. The school runs a scholarship programme.