"We realise the gravity of this error and are deeply remorseful. Whilst this was completely unintentional, we are extremely upset that we may have exposed our students to a website of this nature as it is clearly not in line with our school values."

When the Mount Eliza school became aware of the blunder it emailed students urging them to not click the link. They were told it may infect their computers.

One parent, who did not want to be named, said he was "totally and completely dismayed" and could not understand how the incident happened.

"Fortunately I don't have a child in year 7, but if I did I would be ropeable. They are supposed to be the guardians of these young children and protecting them from such filth."

He said telling students not to access the link was a sure way of encouraging them to click the link.