Underclassman (noun)

A student in their first or second year of high school or college.

Origin:

From under- + class + -man.

Examples:

1. The underclassman was not yet allowed to participate in senior activities.
2. Many underclassmen struggle with the transition to high school or college.
3. The underclassman was required to take certain courses before moving on to more advanced ones.
4. Many underclassmen were intimidated by the upperclassmen.
5. The underclassman was advised to get involved in extracurricular activities early on.