Prime Minister Rishi Sunak confronted a mounting disaster over Britain’s crumbling colleges after a former authorities official mentioned on Monday that Mr. Sunak had refused to rebuild extra colleges whereas he was head of the Treasury, regardless of warnings that light-weight concrete utilized in tons of of buildings was a risk to life.

The former official, Jonathan Slater, who held one of the vital senior roles within the Department of Education, mentioned that in 2021, when Mr. Sunak was chancellor of the Exchequer, he lower in half an inside advice to rebuild 100 colleges yearly. That quantity had already been scaled again from the division’s unique advice in 2018 that the federal government rebuild 300 to 400 colleges a yr.

“We weren’t just saying there was a significant risk of fatality,” Mr. Slater said on BBC Radio 4’s Today program. “We were saying there was a critical risk to life if this program is not funded.”

For the Conservatives, who’re burdened by a stagnant financial system and prolonged ready lists at hospitals, a disaster in colleges poses an acute political danger. They already lag the opposition Labour Party by practically 20 proportion factors in polls, and are resorting to divisive issues like immigration and local weather coverage, to attract sharp contrasts with their opponents.

Mr. Sunak heatedly rejected Mr. Slater’s costs, saying it was “completely and utterly wrong” to carry him answerable for the funding shortfall. He mentioned that as chancellor, he had introduced a 10-year program to rebuild 500 colleges. And he mentioned the issues with the concrete, which was used from the Fifties to the Nineties and has been discovered to have deteriorated, affected simply 5 p.c of England’s 22,000 colleges.

Last week, the federal government ordered greater than 100 colleges identified to include the fabric to not reopen after the summer time trip or to maneuver their college students on-line or to short-term buildings. And the prospect that tons of extra is perhaps affected has disrupted the lives of 1000’s of households, elevating anxieties which have forged a pall over the beginning of the college yr.

Builders used the fabric, generally known as bolstered autoclaved aerated concrete or RAAC (pronounced rack), in roofs and partitions as a result of it’s light-weight and cheaper to work with than conventional concrete. But engineers say it degrades extra shortly than normal bolstered concrete, with a life span of solely about 30 years. It can be weak to structural failure.

In May 2019, the trade’s Standing Committee on Structural Safety warned that planks made out of the light-weight concrete that predated 1980 must be changed. “Although called ‘concrete,’ it is very different from traditional concrete and, because of the way in which it was made, much weaker,” the report mentioned.

The Labour Party has seized on these warnings to argue that successive Conservative-led governments didn’t prioritize little one security. Warnings concerning the risks posed by the fabric started to emerge within the late Nineties, and have become extra acute after a college ceiling collapsed in 2018. Even now, nevertheless, the schooling division mentioned it was ready on questionnaires to be returned from 10 p.c of the nation’s colleges to find out whether or not they had been in danger.

Labour’s shadow schooling secretary, Bridget Phillipson, mentioned the selections Mr. Sunak made as chancellor had “put children directly at risk from this dangerous form of concrete, which should have been replaced.”

In a social media publish issued on Sunday, Labour mentioned, “Do you think your child’s school should be safe? Rishi Sunak doesn’t.”

The authorities’s case has not been helped by a report in The Sun, a London tabloid, that the places of work of the secretary of schooling, Gillian Keegan, and her division, had been reworked at a value of tens of thousands and thousands of kilos throughout this era. The contract for the renovation was awarded underneath Ms. Keegan’s predecessor, The Sun reported.

In an appearance on Sky News on Monday, Ms. Keegan was requested whether or not she had spent the cash on refurbishments. “I don’t know, actually,” she mentioned. “I didn’t. I haven’t done it. Which offices?”

Ms. Keegan additionally raised eyebrows by releasing a three-minute video over the weekend by which she mentioned the federal government’s response to the protection danger whereas backed by a soothing dance-mix soundtrack extra acceptable to a house enchancment video.

“We’re working to make sure there is minimal disruption to education,” Ms. Keegan mentioned within the video. “My key message to parents, students and teachers is that the vast majority of you will not be affected by this.”

Stephen Castle contributed reporting.