I understand the meaning of "triple", but what does "triple up" mean? What is the meaning of "up"?
Our campuses are increasing class sizes. Services may be diminished. Even in residence halls, you might see more tripling up. It's that type of ripple effect in the quality of the student experience.
Admissions officers at the State University of New York college campus here are suddenly afraid of getting what they have always wished for: legions of top high-school seniors saying "yes" to their fat envelopes. Students are already tripled up in many dorm rooms after an unexpectedly large freshman class entered last fall.