OSSD requirements at a glance
One credit is earned for successfully completing a course of 110 hours. Schools may recognise some previous studies abroad, which reduces the number of credits an international student still needs.
- 30 credits: 17 compulsory and 13 optional (for students who started grade 9 in 2024 or later; earlier students: 18 compulsory and 12 optional)
- Compulsory credits include 4 English, 3 mathematics, 2 science, Canadian history and geography, arts, health and physical education, French as a second language and technological education
- Literacy requirement: the Ontario Secondary School Literacy Test (OSSLT), usually in grade 10, or the literacy course (OSSLC)
- 40 hours of community involvement
- 2 online learning credits
- A financial literacy component in Career Studies for students who entered grade 9 in 2025–26 or later
How long does it take?
Students who start in grade 9 usually complete the OSSD in four years. Students joining in grade 11 often graduate in two years, depending on how many credits the school recognises from their home country. Summer and online courses can help students who join late.
OSSD and university admission
Ontario universities calculate admission averages from the best six grade 12 (4U/4M) courses. Universities elsewhere in Canada and around the world also accept the OSSD. Students who complete grade 12 in Ontario generally apply as domestic-curriculum applicants rather than international-curriculum applicants, which simplifies the process.
Where to study for the OSSD
All Ontario public school boards and Ontario private schools inspected by the Ministry of Education can grant OSSD credits. Compare Ontario schools by fee and program on our Ontario page.
Not sure which Canadian high school fits your child?
We help international families compare schools, fees, boarding and homestay options, and handle the study permit process.
Frequently asked questions
Can international students get the OSSD?
Yes. Any student who completes the requirements at an Ontario school that grants credits receives the OSSD, regardless of citizenship.
Is the OSSD recognised outside Canada?
Yes. Universities in the United States, the United Kingdom, Europe, Australia and Asia accept the OSSD for undergraduate admission.
What is the OSSLT?
The Ontario Secondary School Literacy Test checks reading and writing skills and is normally written in grade 10. Students who do not pass can retake it or complete the Ontario Secondary School Literacy Course.