The country's largest teachers union says the Government should not ignore calls to extend the 2012 deadline for reporting back on how national standards are working.
A survey from an independent research group suggests the Government should delay the reporting of reading, writing and maths standards, because schools are unlikely to have comparable figures.
Originally, schools were to report back on student achievement under the new standards in 2011, but the deadline was moved to 2012.
The Council for Educational Research's survey of hundreds of principals, teachers, trustees and parents suggests that date might also be too soon to gather accurate data.
The teachers' union, New Zealand Educational Institute, says some schools won't have got to grips with the new systems and the national data will be inconsistent.