Former Ofqual chief regulator Sally Collier will not attend a hearing on the GCSE and A-level grading scandal next week.

Earlier this week, Ms Collier resigned from her post following chaos over exam grading this summer.

She has been replaced in the short term by her predecessor Dame Glenys Stacey, supported by Ofsted boss Amanda Spielman.

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The Commons Education Select Committee is due to question Ofqual on Wednesday 2 September next week, over “errors made in the process of awarding this summer’s exam grades and how students who have been adversely impacted are now being supported”.

Questioning is expected to focus on how millions of pupils were awarded grades far lower than they had been predicted through the regulator’s algorithm, causing them to lose out on university places in spite of the government’s subsequent U-turn, and how these students are now being supported.

Education committee chair Robert Halfon told Tes that Ms Collier will not be attending for personal reasons, but may be questioned at a later date. 

Ofqual chair Roger Taylor and the regulator’s executive strategy director Michelle Meadows will attend the hearing along with Julie Swan, executive director for general qualifications.

“We had hoped to have [Ms Collier] as she had agreed but I understand due to personal reasons she is unable to attend,” said Mr Halfon.

Ofqual has not confirmed that Ms Collier will not attend, but a spokesperson said: “Ofqual will ensure there is appropriate representation at the Education Select Committee hearing, where we will be happy to answer any questions the committee has.”

Education secretary Gavin Williamson will face further questioning over the issues around this summer’s exam results on 16 September.