Crumbling schools in East Sussex need more than £35 million structural and modernisation work to bring them up to standard.
The figure was revealed in a report presented to an East Sussex County Council Cabinet meeting yesterday.
The East Sussex Asset Management Plan revealed schools in the county had a £26 million backlog of maintenance work.
Dozens more schools needed new or modernised buildings, bringing the total needed for East Sussex schools to £35 million.
East Sussex may receive as much as £4.4 million in condition grants and £4 million in modernisation grants under the Government's New Deal for Schools programme in the next three years.
The grant is allocated to all education authorities via a formula based on pupil numbers and needs identified in the asset management plan.
An East Sussex Council spokesman said education authorities throughout the country were in a similar position, adding: "The Asset Management Plan is now classified as being satisfactory and we are awaiting confirmation of the allocation of the New Deal for Schools Condition Grant."
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