
Ontario Secondary School Diploma (OSSD)
Ranked 2nd globally in PISA among international high school programs
The Ontario Secondary School Diploma (OSSD) is delivered within one of the highest-performing education systems globally.
Students earn the Ontario Secondary School Diploma (OSSD), enabling applications to top-ranked universities worldwide, including the global Top 200.
The program integrates into your existing curriculum, with credit recognition ensuring academic continuity and minimal disruption.
Connect your school to an established international network of +100 partner schools and educators around the world, supporting global collaboration and exposure.
Faculty receive OSSD-aligned training and ongoing academic support, strengthening instructional quality and assessment standards.

Ranked 2nd globally in PISA among international high school programs
The Ontario Secondary School Diploma (OSSD) is delivered within one of the highest-performing education systems globally.
Rosedale is an established international education organization and the academic authority behind the Global High School program. Rosedale Global High School is an independent, Ontario-based Canadian secondary school inspected by the Ontario Ministry of Education in Canada (#BSID 668726) and authorized to grant the Ontario Secondary School Diploma (OSSD) to Rosedale Global High School graduates.
The program runs alongside your current curriculum, not as a replacement. Through structured alignment prior credit recognition, students progress toward the Global High School credential while maintaining continuity with your academic model.
The OSSD is a globally recognized high school credential issued within one of the world’s highest-performing education systems. It is widely accepted by universities and higher education institutions internationally.
The program is delivered on campus, within your school. Teaching is led by your faculty and supported by a dedicated academic platform that provides curriculum resources, assessment tools, and academic oversight
This is a formal institutional partnership. The program is implemented through your school, under your leadership and governance, not delivered independently or directly to students.
Teaching is delivered by your faculty, following Rosedale’s Global High School academic framework. Student assessment follows globally benchmarked standards and is overseen by OSSD-certified teachers in Canada to ensure consistency and academic integrity.
Students must demonstrate a minimum B1 level of English to enter the program. All candidates are assessed prior to entry, and structured solutions are available to support English level development before program start when needed.

Rosedale International Education is the academic authority behind the Global High School program, providing the OSSD curriculum, assessment framework, and alignment with the Ontario Ministry of Education.

Start Global Consulting is the regional partner responsible for institutional implementation, faculty onboarding, operational coordination, and ongoing engagement with partner schools in Latin America.