The teachers union says despite assurances from the Ministry of Education, it's not happy over the latest Novopay issues.
Reports have been coming in that some staff were not paid this week.
NZEI President President Judith Nowotarski says the ministry has promised them that the problems should be resolved soon.
But she says even one mistake is not good enough.
"Our feeling is that 13 months down the track we're in the same place we were."