St Kevin's College headmaster, Stephen F. Russell, has publicly apologised and says the students are being disciplined. He added the incident first came to notice after other students flagged it.
‘Students upset by the behaviour have already come to me and we have been following through in both a disciplinary and pastoral manner today,’ he said, according to 3AW .
‘We have always and will continue to challenge such poor behaviour and misogynistic attitudes through programs at school and with the co-operation of parents.’
St Kevin's College, located in posh Toorak, is one of Melbourne’s most expensive private schools for boys.
The witness, ‘Melanie’ who took the video says the tram was full, with many elderly passengers and young children.
‘I thought it was disgusting,’ she told ABC radio, adding she didn’t confront the boys out of fear about what might happen.
ABC News Breakfast host Michael Rowland slammed the incident as ‘disgraceful behaviour’, writing on Twitter that ‘It’s much more than a sexist chant.’