Kiwi principals are rejecting overseas calls to stop children starting school until their 7th birthday.
If the schooling age was raised, some local parents would be "tearing their hair out", said Rotorua Principals Association president Linda Woon.
"Many of the children, developmentally, are ready to start school at age 4."
A 127-member educational lobby group in Britain is seeking to raise the compulsory formal schooling start age from 5 on the grounds early education is causing "profound damage" to children.
The group of academics, teachers, authors and charity leaders called for a fundamental reassessment of national policies on early education, claiming the present British system robs infants of the ability to play and puts too much emphasis on formal learning at a young age.