The Principals Federation has called on school trustees to join its opposition to the national standards in reading, writing and maths.
The organisation says the Government has ignored principals' and teachers' criticisms of the national standards.
Now it is hoping that parents will succeed where education professionals have failed.
The federation on Friday sent a letter to nearly every primary school board chairperson.
The letter asks boards to write to the Government expressing their opposition to the policy.
Federation president Peter Simpson says he hopes parents agree with the views of teachers and principals on the standards and will write to the Government expressing their concern.
The federation says national standards will harm children and schools have an ethical and moral duty to oppose it.