School leaders say the Government needs to help them out so they can deal with rising internet costs and the advent of ultra-fast broadband.
They say schools can be paying thousands of dollars a month for internet usage, and that could double when ultra-fast broadband arrives.
They also worry schools do not have the infrastructure to make the most of the new connections.
But the Ministry of Education says the prices offered so far for ultra-fast broadband are comparable to schools' current charges.
The ministry is leaving it to schools to create their own bulk deals by working in clusters. It says schools could save money by using the faster broadband for their phone calls.