The Ontario Secondary School Diploma (OSSD) is one of the most globally recognised high school credentials in the world. Issued by the Ontario Ministry of Education in Canada, the OSSD opens doors to top universities across North America, Europe, Asia, and beyond. For school owners looking to offer a competitive international programme and for parents seeking a future-ready pathway for their children, understanding the OSSD requirements is the essential first step.
So, how many credits to graduate Ontario? What are the literacy and community service expectations? And how can students outside Canada fulfil every requirement without relocating? This guide covers everything you need to know about earning the OSSD, from the credit structure to the role that accredited partner schools play in delivering the programme internationally.
The 30-Credit Requirement: Compulsory and Elective Courses
At the heart of the OSSD requirements is a 30-credit framework that balances structured learning with personal choice. Each successfully completed course earns a student one credit, and a minimum grade of 50 percent is needed to pass. Of the 30 OSSD credits needed, 18 are compulsory and 12 are elective.
Compulsory Credits (18 Credits)
The compulsory portion ensures that every graduate has a strong, well-rounded academic foundation. Students must earn credits in the following subject areas:
- 4 credits in English (one per grade, from Grade 9 through Grade 12)
- 3 credits in Mathematics (including at least one at the senior level)
- 2 credits in Science
- 1 credit in French as a Second Language
- 1 credit in Canadian History
- 1 credit in Canadian Geography
- 1 credit in the Arts (visual arts, music, drama, or dance)
- 1 credit in Health and Physical Education
- 0.5 credit in Civics
- 0.5 credit in Career Studies
In addition, students must earn one credit from each of three elective groups that span subjects such as additional English, social sciences, business studies, technological education, and the arts. This grouping system encourages students to explore disciplines beyond the core requirements.
Elective Credits (12 Credits)
The remaining 12 credits are chosen entirely by the student based on personal interests, strengths, and university aspirations. This flexibility is one of the defining features of the Ontario curriculum. Whether a student is passionate about computer science, entrepreneurship, media arts, or world languages, the elective structure allows them to build a transcript that reflects their individual goals.
For international students entering the programme after Grade 9, a process called Prior Learning Assessment and Recognition (PLAR) allows schools to evaluate previous academic work and grant equivalent OSSD credits. This ensures that students are not required to repeat coursework they have already mastered in their home country’s curriculum.
The Ontario Literacy Requirement and Community Involvement Hours
Beyond earning 30 credits, OSSD candidates must satisfy two additional graduation requirements: a provincial literacy standard and a community involvement commitment.
The Provincial Literacy Requirement
Every student working toward the OSSD must demonstrate competence in reading and writing. The primary method is the Ontario Secondary School Literacy Test (OSSLT), a standardised assessment administered by the Education Quality and Accountability Office (EQAO). The test is typically taken in Grade 10 and evaluates whether students possess the foundational literacy skills needed for success in school, in the workplace, and in everyday life.
Students who do not pass the OSSLT on their first attempt are given the opportunity to retake it. If a Grade 12 student has been unsuccessful after multiple attempts, they can fulfil the literacy requirement by completing the Ontario Secondary School Literacy Course (OLC4O) instead. This alternative ensures that no student is permanently blocked from graduation by a single test result, while still maintaining a rigorous standard of literacy across all graduates.
Community Involvement Hours
The OSSD also requires students to complete a minimum of 40 hours of community involvement activities before graduation. These hours are designed to help students develop a sense of civic responsibility, understand the roles they play within their communities, and build skills that extend beyond the classroom.
Community involvement can take many forms, including volunteering at local organisations, participating in environmental initiatives, mentoring younger students, or supporting charitable events. The activities must be completed outside of regular class time and cannot be part of a paid position.
For international students, the required number of hours may be prorated depending on the grade at which they enter the programme. Accredited partner schools receive detailed guidelines to help students identify meaningful community involvement opportunities in their local context.
How International Students Meet OSSD Requirements Through Partner Schools
One of the most common questions from school owners and parents outside Canada is straightforward: can a student earn the OSSD without physically studying in Ontario? The answer is yes, provided the programme is delivered through an accredited institution that operates under the oversight of the Ontario Ministry of Education.
Rosedale Global High School is an Ontario-registered secondary school (BSID #668726) inspected by the Ontario Ministry of Education and authorised to grant the OSSD. Through a network of international partner schools, Rosedale delivers its transformative OSSD curriculum to students around the world while maintaining full compliance with Ontario’s academic standards.
Here is how the process works for international students:
- Registration and Ontario Education Number (OEN): Upon enrolment, each student is assigned a unique nine-digit Ontario Education Number by the Ministry of Education. This number follows the student throughout their secondary education and is used on all official academic records.
- Prior Learning Assessment and Recognition (PLAR): Students entering the programme after Grade 9 undergo a formal assessment of their previous academic transcripts. Rosedale’s counselling team evaluates prior coursework and grants equivalent OSSD credits, ensuring students receive recognition for what they have already learned.
- Centralised Evaluation: All course assessments are managed by Rosedale’s Central Evaluation Team in Toronto. Ontario Certified Teachers grade every assignment and examination, ensuring consistency, transparency, and academic integrity across all partner school locations.
- Official Documentation: Students receive Ontario report cards, an Ontario Student Transcript (OST), and upon meeting all OSSD requirements, the official Ontario Secondary School Diploma. Graduates apply to universities worldwide as students of an Ontario high school, with the OSSD accepted globally without additional standardised testing.
- English Language Placement: To ensure academic readiness, international students from non-English-speaking backgrounds complete an English placement assessment at the point of entry. Recognised test scores such as IELTS, TOEFL, Duolingo, or Cambridge may be submitted as alternatives.
This model allows partner schools to integrate the OSSD into their existing academic programme. Classroom instruction and student support are provided locally by the partner school’s own trained staff, while Rosedale handles curriculum delivery, evaluation, academic administration, and all reporting to the Ontario Ministry of Education.
Frequently Asked Questions
Is the OSSD recognised internationally?
Yes. The OSSD is consistently ranked among the top education credentials in the world, supported by Ontario’s strong performance in the Programme for International Student Assessment (PISA) conducted by the OECD. Universities in Canada, the United Kingdom, the United States, Australia, and across Asia accept the OSSD for direct admission.
Can a school outside Canada offer the OSSD programme?
Schools outside Canada can deliver the OSSD through an accredited partnership with an Ontario-registered institution such as Rosedale Global High School. Through this model, partner schools integrate the Ontario curriculum into their existing programme while Rosedale manages evaluation, academic administration, and compliance with the Ontario Ministry of Education.
What makes Rosedale different from other OSSD providers?
Rosedale International Education offers a transformative approach to learning that goes beyond standard curriculum delivery. With centralised evaluation by Ontario Certified Teachers, a digital learning platform, comprehensive teacher training programmes, and partnerships with leading universities including the National University of Singapore, the University of Edinburgh, and Imperial College London, Rosedale provides a complete ecosystem for student success.
Partner with Rosedale to Bring the OSSD to Your School
The OSSD requirements are designed to produce graduates who are academically prepared, critically minded, and ready to succeed at the university level. For school owners, offering the OSSD is a strategic decision that strengthens your institution’s academic credibility and attracts families seeking a globally recognised pathway for their children. For parents, the OSSD provides a clear and structured route to top universities worldwide.
Rosedale International Education makes it possible for schools anywhere in the world to deliver the Ontario curriculum with full support. From curriculum and teacher training to centralised evaluation and academic administration, Rosedale provides the infrastructure and expertise that partner schools need to offer the OSSD programme with confidence.
If you are ready to explore how the OSSD can elevate your school’s programme and create life-changing learning outcomes for your students, contact Rosedale International Education to start the conversation today.
