In his latest summer broadside against the Scottish Executive, John Swinney, SNP leader, says that private finance initiative (PFI) and PPP projects incur higher interest charges of between pound;53 million and pound;80 million extra every year.
"That pound;80 million is equivalent to 10 new schools every year for the next 30 years," he said.
Mr Swinney said that private finance schools in Glasgow will cost an extra pound;6.75 million a year - more than pound;200 million over the lifetime of the contract, equivalent to 25 new schools.
He said SNP-run Falkirk Council was putting together a "ground-breaking pound;55 million bid" to rebuild four secondaries on a not for profit basis and appealed to the Executive, not to block it. "Don't reject a good idea simply because it comes from the SNP."