According to Ontario Secondary School Diploma Requirements, students must complete the following prerequisites to obtain an Ontario Secondary School Diploma (OSSD):

  • 30 credits, including 18 mandatory credits and 12 optional credits.
  • 40 hours of community involvement.
  • Successful completion of the EQAO Ontario Secondary School Literacy Test (OSSLT) or the Ontario Secondary School Literacy Course (OLC).

18 compulsory credits:

Students must earn the following 18 mandatory credits to obtain the Ontario Secondary School Diploma:

4 credits in English (1 credit per grade) *

3 credits in Mathematics (1 credit in Grade 11 or 12)

2 credits in Science

1 credit in Canadian History

1 credit in Canadian Geography

1 credit in the Arts

1 credit in Health and Physical Education

1 credit in French as a Second Language

0.5 credit in Career Studies

0.5 credit in Civics

Plus one credit from each of the following groups:

Group 1:

  • English, or French as a Second Language*
  • Native language.
  • Classical or an International language.
  • Social Sciences and the Humanities.
  • Canadian and World Studies.
  • Guidance and Career Education.
  • Cooperative Education.


Group 2:

  • Health and Physical Education.
  • Arts.
  • Business Studies.
  • French as a Second Language.
  • Cooperative Education.


Group 3:

  • Science (Grade 11 or 12).
  • Technological Education.
  • French as a Second Language**
  • Computer Studies.
  • Cooperative Education***


*A maximum of 3 credits in English as a second language (ESL) or English Literacy Development (ELD) may be counted towards the 4 compulsory credits in English, but the fourth credit must be earned for a Grade 12 mandatory English course.

**In group 1,2,3, a maximum of 2 credits in French as a Second Language can count as compulsory credits,  one from group 1 and one from either group 2 or 3.

***A maximum of 2 credits in cooperative education can count as compulsory credits. The 12 optional credits may include up to 4 credits earned through approved dual credit courses.


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