upper·class·man / ˌʌpəˈklɑːsmən; NAmE ˌʌpərˈklæs-/, upper·class·woman /ˌʌpəˈklɑːswʊmən; NAmE ˌʌpərˈklæs-/ noun
( pl. -men / -men; NAmE /, -women / -wɪmɪn; NAmE /) (in the US) a student in the last two years of high school or college
—compare underclassman