Thirteenth grade

In some locales, receiving a high school diploma or equivalent is compulsory.

In others, receiving a high school diploma is not required but may be a prerequisite to enrolling in certain post-secondary institutions.

The Ontario Academic Credit (OAC) (French: Cours préuniversitaire de l'Ontario or CPO) was the fifth year of secondary school education designed for students preparing for post-secondary education that existed in the province of Ontario, Canada.

[1] Most jurisdictions in the United States require or offer only twelfth grade as the final year of secondary school.

[6] The educational plan for high school graduates who wish to become practical engineers prior to their mandatory army service is known as "Yud Gimel-Yud Daled" (י"ג-י"ד. lit.