High school is a name used in some parts of the world, and particularly in North America, to describe the last segment of secondary education. High school is also the name used to describe the institution in which the final stage of secondary education takes place.
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Noun 1. a public secondary school usually including grades 9 through 12; "he goes to the neighborhood highschool" (synonym) senior high, high, highschool, high school (hypernym) secondary school, lyceum, lycee, Gymnasium, middle school