Informal Athletics (a.k.a. Informals): co-ed sports that meet for two periods Monday, Tuesday, Thursday, and Friday during the school day; offerings include tennis, instructional fencing, fitness/aerobics, and intramural programs.

Adam Kreiger: refers to the Adam Kreiger Adventure Program (AKAP), a ropes/ challenge course and educational program of related activities.

Independent Athletics:
an individualized athletic program for which a student must submit an application to the Athletic Policy Committee before each season; independent athletics must meet the goals of the Hopkins Athletic Department, demand comparable commitment to the standard program and be closely supervised.

Harmonaires, Spirens, & Triple Trio: the student a cappella singing groups on campus.