If your institution (school) took action toward you, whatever you did has to be reported (even if it isn't on your transcript).
Deliberate vandalism isn't going to be taken lightly. An accident or "goofing around" that resulted in being written up and required to replace damaged property might be considered less aggregious.
We've also seen things like "illegal coffeepot", placing items on the fire escape, and those other violations of the dorm rules.
Explain what happened, what the consequences were and what has happened since then ("no other institutional action") and/or what you learned from the experience.