Mr Letwin promised to end "swathes of unnecessary government"

Its proposals include getting rid of 2,700 Department for Education civil servants and streamlining school inspections.

Shadow chancellor Oliver Letwin said this would free up �158 a year for every pupil in England.

But the Labour Party accused the Conservatives of using "dodgy figures".

'Fat and bloated bureaucracy'

The Conservatives said the average secondary school of 950 pupils would have an extra �150,100 a year to spend under their plans.

This would be the equivalent to the cost of between five and seven more teachers, or more than 100 computers.

To save money, councils would be given less control over schools, while seven existing quangos and funds would be abolished.

Mr Letwin called for an end to "fat and bloated bureaucracy" in education.

In his three-year spending plan, published in July, Chancellor Gordon Brown said 1,960 education jobs would go as part of cost-cutting worth �4.6bn a year.

The Conservative proposals come after the party commissioned a review of public spending by the David James, formerly in charge of the Millennium Dome.

He found the extra education cutbacks would bring the total savings to �5.7bn a year.

Mr Letwin said: "These proposals will remove vast swathes of unnecessary government control over education spending, and put large sums of extra cash in the front line where it belongs."

The Shadow Education Secretary, Tim Collins, added: "It is essential that more money should go to front-line schools to help teachers, and less on paying for bureaucrats who simply harass them.

"Our public spending plans already envisage increasing funding for schools by a third over four years - a rise of �15bn a year."

He said: "There can also be little doubt that few will miss the quangos, bureaucracies and paper-shuffling empires which we will sweep away as part of these changes."

A Labour Party spokesman said: "None of the Tories' figures add up and so they cannot make these savings.

"Their dodgy figures do not mask their plans for cuts, charges and privatisation."

He added that the Conservative Party was "committed to cutting and privatising essential public services like defence, the police our NHS and our schools".

The education watchdog, Ofsted, said its own three-year restructuring project would deliver annual budget savings of 20% by 2008.

A Department for Education and Skills spokesman declined to comment.