Education Minister Hekia Parata is refusing to say how much top teachers will earn under a performance pay scheme or where the funding for extra pay will come from.
In a pre-Budget speech in which she announced $511.9 million of extra education spending over fours years, Ms Parata said performance pay was among the options being considered as part of an appraisal system to boost quality teaching.
The new spending comes on top of $304m tagged to professional learning and development for teachers in primary and secondary education.
But Ms Parata will not say how much extra top teachers would earn under a performance pay scheme.
"To put some sort of figure on it is to somehow move away from what the real focus of my speech is _ that we have to have quality happening for all teachers, and that means quality learning experiences for all students," she told TV3's The Nation.