Devon County Council has written to the Prime Minister telling her scores of schools will lose out from a new proposed funding formula.
The authority believes children in Devon will suffer if the government's fairer funding system is introduced.
Our schools get £290 a child less than the average and the money they get is set to fall further for the majority of schools in the county.
Conservative County Council Leader, John Hart, hopes Theresa May will reconsider her plans.
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