Unruly student flat initiations led to disciplinary action against 17 University of Otago students last year - including nine exclusions.
Appeals by the then second-year students against their exclusion from the first semester of this year, after an out-of-control initiation party, were rejected by the university.
They are able to reapply for the second semester.
In his annual report to the university council, proctor Dave Scott said the initiation issue was a concern as, on occasion, it had moved from harmless fun to significant anti-social and harmful behaviour.
In a bid to reduce the harm caused by extreme student initiations, an effort was made to educate first-year students that it was their choice to attend or not attend the events, but many still did.