The NSW Teachers Federation says it is "unacceptable" that nearly 190 schools will receive less money under the state's new needs-based funding model.
While they said the new system announced by the government on Tuesday is a "significant development", it was "unacceptable" that 187 schools could be as much as $50,000 a year worse off.
"On behalf of these school communities, the Federation will be calling on the Minister to allocate the relatively modest amount of additional funding required to ensure no school dips below current funding levels," President Maurie Mulheron said in a statement.
She also criticised the government's Resource Allocation Model, which will see schools, rather than the government, manage their budget, saying it opens the way for buck-passing.
"Devolving responsibility for budgets, resources and staffing to the local school level like this has been used to blame school principals and staff for the shortfalls and problems caused by a reduction in government investment," she said.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
The new system distributes money based on students' socio-economic backgrounds.
The funding, which includes an additional $100 million from the federal government's Gonski agreement, will be rolled out across state schools from next year.
