Teachers, business leaders, politicians and residents have all put their names to the campaign - just two days after it was launched by The Star and Sheffield Telegraph.
The newspapers have united with city leaders and politicians to campaign for a better settlement, amid deepening dismay that the city’s schools are among the worst funded in England.
An average sized primary school in Sheffield would recevie £260,000 more - and an average secondary school £822,000 more - if funded the same as Manchester.
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Jayne Brown, who signed the online petition, wrote: “As someone who benefitted from an education in Sheffield that allowed me to develop a career I am proud of, I want the same for my daughter and son.”
Kath Galloway said the situation was ‘completely wrong’.
Former teacher Alan Baldwin wrote: “I was a primary school teacher and a headteacher in Sheffield for many years.
“The kids and their families were great.