About 100 educators stood united on the doorstep of Todd McClay's Rotorua office chanting, singing and waving bright yellow signs, protesting the proposal to move to global funding for schools.
Hundreds of vehicles tooted in support of the protest, which closed the NZEI Te Riu Roa's four-day annual conference.
The protest was also a preview of a bus tour and actions planned in the next school term to draw parents and the public's attention to education underfunding and the Government's "radical" education reform agenda.
"Schools and early childhood centres need better funding not bulk funding," NZEI Te Riu Roa president Louise Green told the crowd.
"Today's action is indicative of the sort of activity our children's educators have committed to in order to win better funding and stop the Government's radical education reform agenda.