【How-To】What's the Average Age of a 7Th Grader

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The four years of undergraduate education are called: (1) freshman year, and someone in their first year is a freshman. … These same terms apply in the same way to the four years of a standard high school: 9^th grade is freshman year, 10^th grade sophomore year, 11^th grade junior year, and 12^th grade senior year.