A pass is used during the academic year to be gone overnight on weekends. Plebes are limited to one pass per semester, yearlings get two per semester, not sure about cows and firsties but they do increase each year. Cadets can earn more passes by tutoring, good perforamance, etc. Cadets in good standing also get one spirit pass per semester to go to an away sporting event.
Leave is Christmas break, spring break, and summer leave that all cadets get unless on restriction of some kind.