Controversy has been brewing over the issue this week, after an Auckland primary school scrapped religious classes when parents complained to the Human Rights Commission.

"The harm is that it's totally monocultural," David Hines from the Secular Education Network told Firstline.

"What's happening in schools now, it's not education, it's a promotional programme."

Mr Hines, a former Methodist minister, believes teaching Christian education in schools is actively putting down other religions.