The word used in my experience is upperclassman. The dictionary definition is a student of the junior or senior year of either high school or college, but for new first-years, it is often extended to sophomores, juniors, and seniors.

Note that this word is not gender neutral, and so may be phased out in the next twenty years or so.

The word used in my experience is upperclassman. The dictionary definition is a student of the junior or senior year of either high school or college, but for new first-years, it is often extended to sophomores, juniors, and seniors.

Note that this word is not (politically correct) gender neutral, and so may be phased out in the next twenty years or so.