It was 1 student, a single bloke, NOT students plural. I know who it was. I was in their year level at Xavier and was also in the facebook group at the time: VCE discussion space. He said something about 'pakenham high povos' or something like that. From my recollection (I didn't know him very well) he was kind of a douchebag, a bit of an arrogant dickhead. Nevertheless I was still shocked when that happened.
Its just one student though so if you are throwing all private school or Xavier students into the same boat then you are just the same as him throwing all of the pakenham high/public school students in the same boat.
Pakenham high has a more diverse group of pupils and generalisations would be foolish. I think most here would however be comfortable in speaking generally about Xavier in respect to some things at least.
Xavier students generally come from well off families. But I can't infer anything from pakenham high students really other than they may be zoned to the school.