An education expert says we should be worried about low maths results. 

Prime Minister Christopher Luxon revealed data which he says shows that four out of five Year 8 students aren't at the expected level.  

He's bringing forward a new math curriculum to Term 1 next year, assessing twice yearly, and a $20 million boost for teachers' professional development.  

New Zealand Initiative researcher Michael Johnston told Ryan Bridge it's likely things have been like this for some time. 

He says the Government's action is necessary, but time will tell whether it's enough. 

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