Best International Schools in Sydney

A highly prestigious Anglican girls' day-and-boarding school on Sydney's Upper North Shore (Wahroonga), founded 1885, with a sustained record of strong HSC results. Best for families seeking a single-sex, faith-grounded, academically rigorous education with boarding. HSC-only (no verified IB).

A genuinely internationally-minded, secular, co-educational independent school in inner-city Sydney whose true distinction is its compulsory multilingual programme from Preschool. Note: despite the name, IGS is an HSC school — no public evidence it offers the IB Diploma — so its 'international' character is linguistic and cultural, not curricular.

A large, well-resourced, top-tier Sydney independent boys' day-and-boarding school with a strong HSC record and an exceptionally broad co-curricular programme. Best for families wanting a single-sex, faith-heritage environment on Sydney's Upper North Shore. HSC-only — no IB, despite occasional confusion.

A 160-year-old Uniting Church independent school in Stanmore, Sydney, offering a dual senior pathway — the NSW HSC and the IB Diploma Programme (an IB World School since 2007), with additional Cambridge International accreditation. Historically a boys' school with boarding, it is mid-way through a staged transition to full co-education by 2033. One of the genuine IB-offering options in Sydney, useful for expat families who want an internationally portable Diploma alongside a strong local HSC track.

A genuine high-performing co-educational secular independent — notable as one of the very few non-selective NSW schools to consistently place in the state's top 10 for HSC. A strong fit for expat and competitive-parent families, with two honest caveats: it is owned by Inspired Education Group (a for-profit global operator), and it is a relatively young institution (founded 2000/2001) without the heritage of Sydney's century-old independents.

A co-educational Anglican K–12 day school in Cremorne on Sydney's Lower North Shore that genuinely offers a dual senior pathway — students choose between the NSW HSC and the full IB Diploma in Years 11–12, and the school has run the IB continuously since 1988, the longest of any school in NSW. That authentic IB-or-HSC choice, rare among Sydney independents, fits internationally-mobile families wanting a globally portable qualification without leaving the local system. It is a day school only — no boarding.

A co-educational Anglican K–12 day school in the heart of Sydney's CBD that offers genuine curriculum choice at senior level — students choose between the NSW HSC and the full IB Diploma Programme — with the IB Middle Years Programme (MYP) framing Years 7–10. That dual HSC/IBDP senior pathway, plus an MYP middle school, fits internationally-mobile families who want an IB-recognised credential without leaving a high-performing Australian school. It is a day-only, vertical city campus — no boarding.

A genuine academic powerhouse — one of Australia's most consistently top-performing independent boys' schools, and an HSC (not IB) institution. The honest caveats are structural: boys-only, academically selective at entry, day-only, and — critically for internationally-mobile families — not registered to enrol international students (Australian/NZ citizens and permanent residents only).