Labour wants to know how much the Prime Minister knew about the problem with school structures when he was in charge of the budget.

Rishi Sunak will face questions from Sir Keir Starmer at Prime Minister’s Questions for the first time in seven weeks as he is challenged to reveal what he knew about the school buildings problem.

The Conservative Party leader is involved in the dispute after a minister said Mr Sunak agreed to rebuild 50 schools a year when he was chancellor, turning down a request for 200 schools.

More than 100 schools in England have closed partly or fully because of concerns over faulty concrete.

Mr Sunak will probably be asked by the Labour leader about the money he gave to fix the classroom concrete when they meet on Wednesday for the first time since Parliament came back from its summer break.

Labour has said it will try to use a rare parliamentary method to find out what the Prime Minister knew about the crisis when he was in charge of the budget.

Rishi Sunak is accused of cutting the school rebuilding programme by half when he was chancellor, funding only 100 schools a year when 400 needed repairs, according to a former DfE official.

The Prime Minister denied the attack on his Treasury record.

Meanwhile, shadow education secretary Bridget Phillipson questioned Education Secretary Gillian Keegan after a company linked to her husband got a £1 million IT contract from a fund for rebuilding schools.

The Daily Mirror reported that Michael Keegan, a non-executive director at technology firm Centerprise, is the husband of the senior Tory. The company was one of six suppliers that got contracts to replace server infrastructure with money from the DfE’s school rebuilding programme fund.

Ms Phillipson said: “This looks like a huge conflict of interest and people will wonder why the Keegans got money from a shrinking fund for school rebuilding.”

There is no evidence of any wrongdoing by Mr and Mrs Keegan.

A DfE spokeswoman said: “Ministers were not involved in the procurement process for these contracts, which followed the existing government commercial procedures.”

This comes after Ms Keegan apologised for swearing at those who did “nothing” about Raac on Monday.

Labour will try to put more pressure on Mr Sunak over the Raac crisis by using a humble address motion, a way to ask for papers from government departments.

They want to see the evidence sent by the DfE to No 10 and the Treasury about the construction problem.

They will also ask for all the correspondence before the 2020 and 2021 spending reviews and the 2022 spring and autumn statements to show what advice Mr Sunak got as chancellor about replacing Raac.

Ms Phillipson said: “Today, we are giving Conservative MPs a choice: to vote with Labour and let parents know who is to blame for this mess or to vote to hide the true scale of this crisis and the Prime Minister’s failure to keep our children safe.”

Mrs Keegan, who is criticised for her handling of the concrete crisis, defended the Prime Minister’s past actions to protect school building safety.

She said: “As chancellor, the Prime Minister started the school rebuilding programmes – delivering 500 schools over the next decade.

“On top of that, the Conservatives have invested £15 billion in schools since 2015.

“Also, capital spending this year will be almost 29% higher in real terms than last year.”

She continued: “An independent review found Labour’s schools funding programme was poorly targeted and complex.

“It did nothing to fix schools in bad condition, especially those affected by Raac. In contrast, the Labour-run Welsh government have done nothing about schools in Wales.”