Your Fast-Track Pathway to Top Canadian Universities
Earn your Ontario Secondary School Diploma (OSSD) 100% online from anywhere in the world.
Ministry-Inspected Ontario School
100% Flexible Online Learning
Personalized Academic Support
University-Focused Pathways
A Trusted Ontario Virtual School
Ontario International School (OIS) is a Ministry-inspected virtual high school offering domestic and international students worldwide the opportunity to earn the Ontario Secondary School Diploma (OSSD) through flexible, personalized learning and expert academic support.
Whether students are preparing for university admissions, relocating to Canada, balancing elite athletic training, or pursuing a globally recognized education, OIS provides flexible learning pathways designed to support academic success and future opportunities.
Ministry Inspected School
Ontario International School (OIS) undergoes regular inspections by the Ontario Ministry of Education to ensure all instructional and administrative standards are met. This oversight guarantees that our teaching methods and curriculum remain at the highest Canadian standard.
Official BSID: 881793
As a registered private school in Ontario, our Board School Identification Number (BSID) confirms our authority to grant OSSD credits. You can verify our active status directly on the Ontario Ministry of Education’s official website using our unique ID.
Globally Recognized OSSD
The Ontario Secondary School Diploma (OSSD) is consistently ranked as one of the top five secondary diplomas in the world. Credits earned at OIS are accepted by every university in Canada, as well as prestigious institutions across the USA, UK, Europe, and Asia.
Why Choose OIS: Personalized Online OSSD for Global Success
Flexible Education Designed for Student Success

Earn Recognized OSSD
Graduate with an Ontario Secondary School Diploma accepted by universities globally.

Learn Anytime, Anywhere
Flexible online learning that adapts to your schedule and goals. You can log in from any device, anytime, and anywhere.

48-Hour Grading & Feedback
Waiting days for a grade holds you back. At OIS, we guarantee feedback and grading within 48 hours so you can master your current lesson and move to the next without delay.

Personalized Academic Support
Receive support from experienced educators and academic advisors. Access live office hours and chat with OIS's highly qualified teachers.

Flexible Year-Round Enrolment
Accelerate your academic journey and stay on track toward university success.

Interactive Online Learning
Students can interact with teachers and classmates through course discussion areas, collaborative activities, and ongoing online academic communication.

Strategic Success Caoching
Every student receives a custom roadmap designed to align their GPA with the specific requirements of top universities.

Fast-Track Opportunities
Accelerate your academic journey and stay on track toward university success.
Programs Designed for Diverse Student Goals
Full OSSD Diploma
The shortest path from High School to a 4-year degree. Complete your Ontario Secondary School Diploma fully online.
Individual Courses & Credits
Take individual credits to improve grades, recover credits, or meet university requirements.
International Credit Transfer
OIS is your bridge to Canada. Turn your international high school credits into a Canadian OSSD.
University Preparation
Strengthen academic performance and prepare for competitive university admissions.
Your Pathway to Top Universities
OIS helps students prepare for competitive university pathways in Canada and internationally through flexible online education, personalized support, and recognized Ontario curriculum standards. OIS credits are recognized by leading institutions across Canada and the world.







100% of major universities worldwide recognize the OSSD. Because OIS is Ministry-inspected (BSID: 881793), your credits move with you to the next level of your academic career
Meet Our Expert Faculty
Ontario International School’s experienced educators are committed to helping students achieve academic excellence through personalized online learning, ministry-aligned instruction, and dedicated student support. Our teaching team brings expertise across science, mathematics, business, English, and university-preparation courses to support student success at every stage of the OSSD journey.
Dr. Mehak Mussawar
Mathematics & Science Instructor
Dedicated to helping students build confidence in mathematics and science through structured instruction, academic support, and interactive learning experiences.
Dr. Sobia Arshad
Biology, Chemistry & Physics Instructor
Helping students build strong scientific knowledge through engaging and inquiry-based learning.
Mohammed Shah
Business Studies Instructor
Guiding students in developing business knowledge, critical thinking, and leadership skills through practical and real-world learning applications.
Anna Faisal
Science Instructor
Passionate about helping students strengthen their scientific inquiry, critical thinking, and academic confidence in a supportive online learning environment.
Veronica Khusial
English Instructor
Supporting students in developing strong communication, literacy, and critical thinking skills.
Ahmed Abdullah
Mathematics, Science & Geography Instructor
Supporting students in developing analytical thinking, scientific understanding, and problem-solving skills through engaging and student-focused online learning.
Students Success Stories
My journey at Ontario International School has been such a positive and rewarding experience. Even though the classes are online, I’ve always felt connected, supported, and part of a real school community. The teachers are caring, dedicated, and always available to help, which makes learning much easier and more enjoyable. What I really appreciate is the strong communication between the school, students, and families, it makes everyone feel involved and supported throughout the learning journey. This school has created a flexible and encouraging environment where I’ve been able to grow academically and personally, and I’m truly grateful for this experience.

Amal Atamaz Alsibai
University Preparation
I had a great experience at OIS. The teachers supported me throughout the whole course, and everything was explained clearly and understandably. I learned a lot and felt comfortable during my studies.

Arsenii Chashchin
OSSD Student
My journey at Ontario International School has been a really positive experience. Before joining OIS, I struggled in regular classrooms and found it difficult to stay focused during lessons. At OIS, I discovered that I learn much better in a flexible environment where I can focus and participate more. The teachers, especially Mr. Christian Bayly, were always supportive and patient whenever I needed help. OIS has helped me grow academically and personally while giving me more confidence in my abilities and future goals.

Mohammad Khalil Hussien
OSSD Student
Based on my experience, I truly appreciate my journey at this school. It has helped me acquire many important skills and i feel prepared to start my university journey. The comprehensive and modern curriculum plays a key rule in enabling students to progress effectively. I highly recommend this school

Rami Sharab
OSSD Student
My journey at OIS has been a truly rewarding experience. While the curriculum is academically challenging, I always felt supported because the teachers were consistently there to ensure we understood every concept thoroughly. Although the school maintains a very strict environment, I have come to realize that this discipline is for our own benefit, helping us grow and succeed. Overall, I am very happy with my time here and grateful for the guidance I received.

Hajar Elayane
International Credit Transfer
My experience at Ontario International School was very pleasant. The school environment is very positive and supportive. The teachers are always ready to offer their help and answer any question no matter the time or day. The courses are very well organized and easy to understand. All the material you need are always provided. The flexible learning environment made it easier to stay motivated and manage my studies effectively. I would definitely recommend OIS to every student looking for supportive and very well organized learning journey.
Hala Canoe
University Preparation
Frequently Asked Questions (FAQ)
Yes. The Ontario Secondary School Diploma (OSSD) is a world-class credential recognized by universities across Canada, the USA, the UK, Europe, and beyond.
Absolutely. By completing your final required credits with us, you meet the admissions criteria for direct entry into 4-year undergraduate programs, bypassing the need for additional transitional years.
Once you submit your current transcripts, our academic team typically provides your custom roadmap within 24 to 48 hours. We identify exactly which credits will transfer and what you need to graduate.
Yes. The OSSD is one of the most widely recognized high school diplomas in the world. OSSD graduates are eligible for direct admission into top-tier universities in the USA, UK, Australia, Europe, and Asia, often without requiring additional foundation years. It is considered equivalent to the UK A-Levels and the International Baccalaureate (IB). We recommend a free assessment so we can show you exactly how it aligns with your local system.
As a registered Ontario private school (BSID: 881793), OIS is subject to regular inspections by the Ontario Ministry of Education. These inspections ensure our curriculum, grading standards, and teacher qualifications meet the rigorous requirements of the provincial education system.
Yes. Many of our students take individual “Reach Ahead” or prerequisite courses with us while attending their local school to improve their GPA or add a missing university requirement.
We use a process called Prior Learning Assessment and Recognition (PLAR) to formally evaluate your home-country or out-of-province transcripts. Through this evaluation, we grant equivalent Ontario credits toward your diploma so you don’t have to repeat subjects you’ve already mastered. We offer this as a Free Credit Assessment: simply provide your current transcripts, and our guidance team will build a custom Roadmap showing you exactly which courses you have left to graduate.
All coursework is completed through our secure student portal. For final exams, we utilize secure online proctoring software to ensure academic integrity, allowing you to complete your assessments safely from home while maintaining the prestige of your diploma.
We value your time. Our instructors are committed to grading all assignments and providing detailed academic feedback within 48 business hours of submission.
Start Your OSSD Journey Today
Join hundreds of students who have fast-tracked their education or boosted their GPA to enter the world’s top universities.
Get a Free Academic AssessmentBook a Free Consultation