One component of the Ontario Secondary School Diploma (OSSD) graduation requirements is the accumulation of 30 credits. A breakdown of the credits is listed below.

Compulsory Credits

Students must earn the following 18 compulsory credits in order to obtain the OSSD:

  • 4 credits in English (1 credit per grade)
  • 1 credit in French as a second language
  • 3 credits in mathematics (at least 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
  • 0.5 credits in civics
  • 0.5 credits in career studies


  • 1 additional credit in English, or a third language, or social sciences and the humanities or Canadian and world studies, or guidance and career education, or co-operative education *
  • 1 additional credit in health and physical education, or the arts, or business studies, or co-operative education *
  • 1 additional credit in science (grade 11 or 12), or technological education (grades 9-12), or co-operative education *

* a maximum of 2.0 credits in co-operative education can count as compulsory credits

Optional Credits

In addition to the 18 compulsory credits, students must earn 12 optional credits selected from the courses listed as available in the school course calendar.