одноклассник znamená v Angličtina

classmate [classmates]▼(student who is in the same class at school)
noun
[UK: ˈklɑː.smeɪt] [US: ˈklæ.ˌsmet]

schoolmate [schoolmates]▼(person who attended school with the subject)
noun
[UK: ˈskuːl.meɪt] [US: ˈskuːl.ˌmet]