Couch burning has made a comeback at the University of Otago.
After falling to a low of 14 fire incidents in 2018, the number of fires recorded by the university more than tripled to 48 last year, in a trend provost Ken Hodge called "very disappointing".
"Despite the best efforts of the proctor and Campus Watch in preventive and educational work regarding fire-lighting, the message is still struggling to sink in with a small minority of students," Dr Hodge said.
The fire incidents detailed in the university's discipline report for last year include a second-year student who set an armchair on fire using accelerant before giving a false name to Campus Watch and running off.
That student, who had been in trouble with the university before, was punished with exclusion from the university for the second semester of last year.
Proctor Dave Scott said the trend was "concerning".