Canada is home to some of the best international high schools in the world. Known for its inclusive culture, world-class education system, and safe living environment, it’s no surprise that international students and expat families are increasingly choosing Canada as a destination for high school education. If you’re a parent or student looking for the best fit, we’ve curated a list of the Top 10 International High Schools in Canada that stand out for academic excellence, global exposure, and supportive student communities.
What Makes Top 10 International High Schools in Canada Stand Out?
Canada’s international high schools provide a balanced mix of academic rigor, character development, and multicultural immersion. Many offer the International Baccalaureate (IB) or Ontario Secondary School Diploma (OSSD) and boast impressive university acceptance rates around the world.
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1. Upper Canada College (Toronto, Ontario)
Founded: 1829 | Curriculum: IB (International Baccalaureate)
Upper Canada College (UCC) is one of the most prestigious boys-only schools in Canada. It offers the full IB program and is known for its rigorous academics, leadership training, and an incredible alumni network. With a strong focus on global citizenship and innovation, UCC attracts students from over 30 countries.
Why choose UCC?
✔ Full IB Program
✔ Extensive extracurriculars
✔ Prestigious reputation
2. Branksome Hall (Toronto, Ontario)
Founded: 1903 | Curriculum: IB
Branksome Hall is an independent girls’ school offering the IB program from Junior Kindergarten to Grade 12. Located in the heart of Toronto, it focuses on academic excellence, leadership, and global engagement. The school has a dedicated residence for international students and offers a seamless transition into Canadian culture.
Highlights:
✔ State-of-the-art STEM programs
✔ Global student exchange opportunities
✔ Supportive boarding environment
Ridley College (St. Catharines, Ontario)
Founded: 1889 | Curriculum: IB and Ontario Secondary School Diploma
Ridley College is a co-ed, private boarding school offering a truly international atmosphere. Students from over 60 countries attend, and the school promotes values like integrity, resilience, and respect. The modern campus, rich heritage, and dual diploma options make Ridley a top choice for international families.
Why Ridley?
✔ Diverse international community
✔ Both IB and OSSD diplomas
✔ Leadership and entrepreneurship focus
St. George’s School (Vancouver, British Columbia)
Founded: 1930 | Curriculum: British Columbia Curriculum
St. George’s is a top-tier boys’ school in Vancouver with a strong global reputation. With over 100 international students each year, the school promotes cross-cultural learning and leadership development. The serene West Coast location adds to its appeal.
Key Advantages:
✔ High university acceptance rate
✔ Strong STEM and athletics programs
✔ Excellent boarding facilities
Appleby College (Oakville, Ontario)
Founded: 1911 | Curriculum: OSSD with Advanced Placement (AP)
Appleby College blends traditional values with modern innovation. It offers robust international student support, personalized learning paths, and a vibrant co-curricular life. It’s ideal for students who want a well-rounded education.
Why It Stands Out:
✔ Global Leadership Diploma
✔ Tech-integrated classrooms
✔ Personalized academic advising
Shawnigan Lake School (Shawnigan Lake, BC)
Founded: 1916 | Curriculum: BC Curriculum
Nestled on Vancouver Island, this co-ed boarding school offers a unique, nature-immersed learning experience. Shawnigan combines academic excellence with outdoor education, arts, and sports — making it ideal for holistic development.
Best for:
✔ Nature lovers and outdoor adventurers
✔ Smaller class sizes
✔ Global student representation
The York School (Toronto, Ontario)
Founded: 1965 | Curriculum: IB (JK–Grade 12)
The York School was Canada’s first fully accredited IB World School and remains one of the best international schools in downtown Toronto. With a focus on critical thinking, global citizenship, and inclusivity, it appeals strongly to expat families.
What Makes It Special:
✔ Full IB continuum
✔ Downtown Toronto location
✔ Emphasis on innovation and inclusion
USCA Academy (Mississauga, Ontario)
Founded: 2016 | Curriculum: Ontario Secondary School Diploma (OSSD)
Located in the heart of Mississauga, USCA Academy is a private international high school dedicated to preparing students for top Canadian and global universities. With a supportive academic environment, personalized learning paths, and strong university partnerships, it is an excellent choice for international students seeking a high-quality education in Canada.
Why Choose USCA Academy?
✔ Focused university preparation programs
✔ Small class sizes with individual attention
✔ International student support and English upgrading programs
Brentwood College School (Mill Bay, BC)
Founded: 1923 | Curriculum: BC Curriculum & University Prep
Brentwood’s “tripartite” program balances academics, arts, and athletics. With oceanfront facilities and high university placement rates, it’s a dream school for international students looking for a balanced and enriching high school life.
Top Features:
✔ Unique tripartite education
✔ Oceanfront boarding campus
✔ Global alumni network
Columbia International College (Hamilton, Ontario)
Founded: 1979 | Curriculum: Ontario Secondary School Diploma
Columbia is Canada’s largest private boarding high school focused solely on international students. It offers a Total Care Education System® that helps students adjust, succeed, and thrive academically and emotionally.
Best For:
✔ International-only environment
✔ Strong university placement partnerships
✔ High student support services
Why Choose an International High School in Canada?
- High academic standards recognized globally
- Safe and welcoming society for newcomers
- Pathway to top universities in Canada, the US, UK, and beyond
- Multicultural classrooms that foster global awareness
- English/French immersion opportunities