But some of the schools' pages have taken jokes too far - prompting a warning from principals.
John Paul College principal Patrick Walsh, who is the New Zealand Secondary Schools Principals' Association president, said some memes pages attacked students and teachers at the schools. Mr Walsh went as far to say such bullying was "hate crimes".
Since our story went to print on Saturday, most of the pages now have disclaimers that state the memes are not intended to be offensive. They say they will no longer post images that are offensive.
Thank goodness for that. One of the schools' pages that was taken down before The Daily Post article went to print had some pretty nasty stuff written about teachers and other schools.
Most teachers work around the clock for our kids. They don't deserve to be targeted online.
Likewise, students don't deserve to be subjected to yet another tactic to make them feel worthless. Kids can be so cruel and such bullying can have a profound effect on people's lives in years to come.
So let's have a laugh but let's also be mindful of people's feelings.