The Minister of Education has sought urgent help for schools having trouble introducing the new curriculum.
All schools were expected to have the curriculum fully in place by the start of this year - more than two years after it was launched.
However the Education Review Office says just 29% of primary schools it visited in the first half of the year have adopted the curriculum, 49% were making good progress and 22% had done little or nothing.
Education Minister Anne Tolley says she has asked the Ministry to help identify the schools that need more help and to give them assistance as soon as possible.
Principals say they like the curriculum, but blame the Government's national standards in reading, writing and maths for distracting them.