Students used to work from physical booklets but Te Kura Correspondence School is transitioning to fully electronic, online system.
McIntyre said student should not have to work online and interact with people who could be a bad influence.
Rural children have been lumped in with thousands of students, said McIntyre
"Now we have prisoners, the expelled, the alienated, the psychological student. These students have access to the online learning and can put up whatever they like," she said.
McIntyre wants the school to separate disengaged students and rural students into separate online classes because the current scheme will lead to bullying and harassment.
Te Kura Correspondence School is defending the online tool, which is used by around 20,000 students.
"For most students it's a far better way of learning, it's more engaging. They can collaborate and have fast turnarounds for teachers to look at their work," said chief executive Mike Hollings
Hollings said the slogans were unacceptable and is working with the students who posted them.
He said it was a rare incident and doesn't know how they would screen student in order to separate classes.
"She [the student] wouldn't have experienced anyone who's been in prison because these kids are in Year 9."
"The fact that student are operating online means that they've become re-engaged with learning and want to be involved," he said.
He said Te Kura provides programmes for kids from range of backgrounds, and no student is forced to work online.
The girl is now doing the majority of her schoolwork from physical booklets, which the school have posted to her.
