The involvement of the schoolboy terrorist Farhad Jabar with a Muslim lunchtime prayer group will further vex Christian groups bridling at government scrutiny of their activities in schools.

An audit of every NSW school prayer group was conducted this year after allegations that radical views were being preached at Epping Boys High School.

NSW Christian Democrat MP Fred Nile is heated up about the prayer rules. Credit:James Brickwood

The NSW government's response hasn't been made public yet, but Premier Mike Baird said this week the Parramatta shooting would accelerate the development of programs to tackle radicalisation.

No reports of extremist preaching were made to the department after the audit began in July. But all schools were told in an email in August that new rules applied to prayer groups: parental permission must be obtained, activities must be monitored, and no proselytising. The email said immediate action was required.