Primary and intermediate school principals are boycotting all work with the Ministry of Education for the next six weeks.
The principals, who are members of the Educational Institute, are unhappy that their latest pay offer did not give them pay parity with secondary principals.
It also did not stop senior teachers in large schools from being paid more than the principals of small schools.
Whetu Cormick is the Principals' Federation President. He joins us in RNZ's Auckland studio.
