The principal of a Tasman school in the midst of a suspected norovirus outbreak says replacing 30 sick teachers has been a mission.
Twenty-one staff at Waimea College in Richmond remained off work on Tuesday with a stomach bug.
Principal Larry Ching says most of them were feeling better but they've been advised by the Public Health Service to stay away for 48 hours after the symptoms stop.
Mr Ching said very few students had been affected, with only seven confirmed cases out of 1500 pupils.
He was hoping the school was now through the worst of it, and praised other staff for being willing to help out covering classes for their unwell colleagues.