Secular activists are renewing calls for the Queensland Labor government to remove volunteer-run religious classes in state schools after discovering a scathing 1972 state government report on the issue. 

Queensland Parents for Secular State Schools spokeswoman Alison Courtice says the report was buried at the time by the Bjelke-Peterson government and recommended discontinuing Christian-run religion classes in favour of historical instruction on all major religions. 

Education Minister Grace Grace says the government has no plans to change the current format of religion classes, which has not changed since 1910.