13th grade

A form of thirteenth grade — The year in school that comes after twelfth grade in some schools in the US, and that came after twelfth grade before 1988 in Ontario, Canada.

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Meanings

noun13th grade (plural 13th grades)

plural 13th grades

  1. alternativeAlternative spelling of thirteenth grade.

Origin

From 13th + grade.

Full word history & related roots →
Cite this entry
APA

13th grade. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/13th%20grade

MLA

“13th grade.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/13th%20grade. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “13th grade,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/13th%20grade.

Source: 13th grade on Wiktionary, CC BY-SA 4.0.