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Some different lessons to learn from the 2020 exams fiasco

by Rob Cuthbert

The problems with the algorithm used for school examinations in 2020 have been exhaustively analysed, before, during and after the event. The Royal Statistical Society (RSS) called for a review, after its warnings and offers of help in 2020 had been ignored or dismissed. Now the Office for Statistics Regulation (OSR) has produced a detailed review of the problems, Learning lessons from the approach to developing models for awarding grades in the UK in 2020. But the OSR report only tells part of the story; there are larger lessons to learn.

The OSR report properly addresses its limited terms of reference in a diplomatic and restrained way. It is far from an absolution – even in its own terms it is at times politely damning – but in any case it is not a comprehensive review of the lessons which should be learned, it is a review of the lessons for statisticians to learn about how other people use statistics. Statistical models are tools, not substitutes for competent management, administration and governance. The report makes many valid points about how the statistical tools were used, and how their use could have been improved, but the key issue is the meta-perspective in which no-one was addressing the big picture sufficiently. An obsession with consistency of ‘standards’ obscured the need to consider the wider human and political implications of the approach. In particular, it is bewildering that no-one in the hierarchy of control was paying sufficient attention to two key differences. First, national ‘standardisation’ or moderation had been replaced by a system which pitted individual students against their classmates, subject by subject and school by school. Second, 2020 students were condemned to live within the bounds not of the nation’s, but their school’s, historical achievements. The problem was not statistical nor anything to do with the algorithm, the problem was with the way the problem itself had been framed – as many commentators pointed out from an early stage. The OSR report (at 3.4.1.1) said:

“In our view there was strong collaboration between the qualification regulators and ministers at the start of the process. It is less clear to us whether there was sufficient engagement with the policy officials to ensure that they fully understood the limitations, impacts, risks and potential unintended consequences of the use of the models prior to results being published. In addition, we believe that, the qualification regulators could have made greater use of  opportunities for independent challenge to the overall approach to ensure it met the need and this may have helped secure public confidence.”

To put it another way: the initial announcement by the Secretary of State was reasonable and welcome. When Ofqual proposed that ranking students and tying each school’s results to its past record was the only way to do what the SoS wanted, no-one in authority was willing either to change the approach, or to make the implications sufficiently transparent for the public to lose confidence at the start, in time for government and Ofqual to change their approach.

The OSR report repeatedly emphasises that the key problem was a lack of public confidence, concluding that:

“… the fact that the differing approaches led to the same overall outcome in the four countries implies to us that there were inherent challenges in the task; and these 5 challenges meant that it would have been very difficult to deliver exam grades in a way that commanded complete public confidence in the summer of 2020 …”

“Very difficult”, but, as Select Committee chair Robert Halfon said in November 2020, things could have been much better:

“the “fallout and unfairness” from the cancellation of exams will “have an ongoing impact on the lives of thousands of families”. … But such harm could have been avoided had Ofqual not buried its head in the sand and ignored repeated warnings, including from our Committee, about the flaws in the system for awarding grades.”

As the 2021 assessment cycle comes closer, attention has shifted to this year’s approach to grading, when once again exams will not feature except as a partial and optional extra. When the interim Head of Ofqual, Dame Glynis Stacey, appeared before the Education Select Committee, Schools Week drew some lessons which remain pertinent, but there is more to say. An analysis of 2021 by George Constantinides, a professor of digital computation at Imperial College whose 2020 observations were forensically accurate, has been widely circulated and equally widely endorsed. He concluded in his 26 February 2021 blog that:

“the initial proposals were complex and ill-defined … The announcements this week from the Secretary of State and Ofqual have not helped allay my fears. … Overall, I am concerned that the proposed process is complex and ill-defined. There is scope to produce considerable workload for the education sector while still delivering a lack of comparability between centres/schools.”

The DfE statement on 25 February kicks most of the trickiest problems down the road, and into the hands of examination boards, schools and teachers:

“Exam boards will publish requirements for schools’ and colleges’ quality assurance processes. … The head teacher or principal will submit a declaration to the exam board confirming they have met the requirements for quality assurance. … exam boards will decide whether the grades determined by the centre following quality assurance are a reasonable exercise of academic judgement of the students’ demonstrated performance. …”

Remember in this context that Ofqual acknowledges “it is possible for two examiners to give different but appropriate marks to the same answer”. Independent analyst Dennis Sherwood and others have argued for alternative approaches which would be more reliable, but there is no sign of change.

Two scenarios suggest themselves. In one, where this year’s results are indeed pegged to the history of previous years, school by school, we face the prospect of overwhelming numbers of student appeals, almost all of which will fail, leading no doubt to another failure of public confidence in the system. The OSR report (3.4.2.3) notes that:

“Ofqual told us that allowing appeals on the basis of the standardisation model would have been inconsistent with government policy which directed them to “develop such an appeal process, focused on whether the process used the right data and was correctly applied”.

Government policy for 2021 seems not to be significantly different:

Exam boards will not re-mark the student’s evidence or give an alternative grade. Grades would only be changed by the board if they are not satisfied with the outcome of an investigation or malpractice is found. … If the exam board finds the grade is not reasonable, they will determine the alternative grade and inform the centre. … Appeals are not likely to lead to adjustments in grades where the original grade is a reasonable exercise of academic judgement supported by the evidence. Grades can go up or down as the result of an appeal.” (emphasis added)

There is one crucial exception: in 2021 every individual student can appeal. Government no doubt hopes that this year the blame will all be heaped on teachers, schools and exam boards.

The second scenario seems more likely and is already widely expected, with grade inflation outstripping the 2020 outcome. There will be a check, says DfE, “if a school or college’s results are out of line with expectations based on past performance”, but it seems doubtful whether that will be enough to hold the line. The 2021 approach was only published long after schools had supplied predicted A-level grades to UCAS for university admission. Until now there has been a stable relationship between predicted grades and examination outcomes, as Mark Corver and others have shown. Predictions exceed actual grades awarded by consistent margins; this year it will be tempting for schools simply to replicate their predictions in the grades they award. Indeed, it might be difficult for schools not to do so, without leaving their assessments subject to appeal. In the circumstances, the comments of interim Ofqual chief Simon Lebus that he does not expect “huge amounts” of grade inflation seem optimistic. But it might be prejudicial to call this ‘grade inflation’, with its pejorative overtones. Perhaps it would be better to regard predicted grades as indicators of what each student could be expected to achieve at something close to their best – which is in effect what UCAS asks for – rather than when participating in a flawed exam process. Universities are taking a pragmatic view of possible intake numbers for 2021 entry, with Cambridge having already introduced a clause seeking to deny some qualified applicants entry in 2021 if demand exceeds the number of places available.

The OSR report says that Ofqual and the DfE:

“… should have placed greater weight on explaining the limitations of the approach. … In our view, the qualification regulators had due regard for the level of quality that would be required. However, the public acceptability of large changes from centre assessed grades was not tested, and there were no quality criteria around the scale of these changes being different in different groups.” (3.3.3.1)

The lesson needs to be applied this year, but there is more to say. It is surprising that there was apparently such widespread lack of knowledge among teachers about the grading method in 2020 when there is a strong professional obligation to pay attention to assessment methods and how they work in practice. Warnings were sounded, but these rarely broke through to dominate teachers’ understanding, despite the best efforts of education journalists such as Laura McInerney, and teachers were deliberately excluded from discussions about the development of the algorithm-based method. The OSR report (3.4.2.2) said:

“… there were clear constraints in the grade awarding scenario around involvement of service delivery staff in quality assurance, or making the decisions based on results from a model. … However, we consider that involvement of staff from centres may have improved public confidence in the outputs.”

There were of course dire warnings in 2020 to parents, teachers and schools about the perils of even discussing the method, which undoubtedly inhibited debate, but even before then exam processes were not well understood:

“… notwithstanding the very extensive work to raise awareness, there is general limited understanding amongst students and parents about the sources of variability in examination grades in a normal year and the processes used to reduce them.” (3.2.2.2)

My HEPI blog just before A-level results day was aimed at students and parents, but it was read by many thousands of teachers, and anecdotal evidence from the many comments I received suggests it was seen by many teachers as a significant reinterpretation of the process they had been working on. One teacher said to Huy Duong, who had become a prominent commentator on the 2020 process: “I didn’t believe the stuff you were sending us, I thought it [the algorithm] was going to work”.

Nevertheless the mechanics of the algorithm were well understood by many school leaders. FFT Education Datalab was analysing likely outcomes as early as June 2020, and reported that many hundreds of schools had engaged them to assess their provisional grade submissions, some returning with a revised set of proposed grades for further analysis. Schools were seduced, or reduced, to trying to game the system, feeling they could not change the terrifying and ultimately ridiculous prospect of putting all their many large cohorts of students in strict rank order, subject by subject. Ofqual were victims of groupthink; too many people who should have known better simply let the fiasco unfold. Politicians and Ofqual were obsessed with preventing grade inflation, but – as was widely argued, long in advance –  public confidence depended on broader concerns about the integrity and fairness of the outcomes.

In 2021 we run the same risk of loss of public confidence. If that transpires, the government is positioned to blame teacher assessments and probably reinforce a return to examinations in their previous form, despite their known shortcomings. The consequences of two anomalous years of grading in 2020 and 2021 are still to unfold, but there is an opportunity, if not an obligation, for teachers and schools to develop an alternative narrative.

At GCSE level, schools and colleges might learn from emergency adjustments to their post-16 decisions that there could be better ways to decide on progression beyond GCSE. For A-level/BTEC/IB decisions, schools should no longer be forced to apologise for ‘overpredicting’ A-level grades, which might even become a fairer and more reliable guide to true potential for all students. Research evidence suggests that “Bright students from poorer backgrounds are more likely than their wealthier peers to be given predicted A-level grades lower than they actually achieve”. Such disadvantage might diminish or disappear if teacher assessments became the dominant public element of grading; at present too many students suffer the sometimes capricious outcomes of final examinations.

Teachers’ A-level predictions are already themselves moderated and signed off by school and college heads, in ways which must to some extent resemble the 2021 grading arrangements. There will be at least a two-year discontinuity in qualification levels, so universities might also learn new ways of dealing with what might become a permanently enhanced set of differently qualified applicants. In the longer term HE entrants might come to have different abilities and needs, because of their different formation at school. Less emphasis on preparation for examinations might even allow more scope for broader learning.

A different narrative could start with an alternative account of this year’s grades – not ‘standards are slipping’ or ‘this is a lost generation’, but ‘grades can now truly reflect the potential of our students, without the vagaries of flawed public examinations’. That might amount to a permanent reset of our expectations, and the expectations of our students. Not all countries rely on final examinations to assess eligibility to progress to the next stage of education or employment. By not wasting the current crisis we might even be able to develop a more socially just alternative which overcomes some of our besetting problems of socioeconomic and racial disadvantage.

Rob Cuthbert is an independent academic consultant, editor of SRHE News and Blog and emeritus professor of higher education management. He is a Fellow of the Academy of Social Sciences and of SRHE. His previous roles include deputy vice-chancellor at the University of the West of England, editor of Higher Education Review, Chair of the Society for Research into Higher Education, and government policy adviser and consultant in the UK/Europe, North America, Africa, and China.

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Policymaking in a pandemic

By Rob Cuthbert

Policymaking in a pandemic must be decisive, transparent and inclusive (1)

After Secretary of State Gavin Williamson announced in March that there would be no GCSE or A-level examinations in Summer 2020, higher education focused at first on whether it would be desirable or even possible for students to begin the new year in Autumn 2020, with particular doubts over international students’ ability and willingness to travel. With the number of UK 18-year-olds in a demographic trough we expected extreme pressure on universities at the exposed end of the market, and there was much talk about the ten or 12 or 14 institutions said to be already especially financially vulnerable. The response of a number of institutions was to make tens of thousands of conditional offers unconditional, reducing uncertainty for themselves and also for their potential students. But ‘conditional unconditional’ offers, even in the market decreed by the government, never seemed to respect the integrity of student choice; it seemed reasonable that they should be outlawed, but government and the OfS went much further.

OfS published its regulation on unconditional offers on 4 May (updated on 17 August 2020, after A-level results by algorithm were announced), enabling OfS to take “… action against higher education providers that use offer-making practices which would not be in the interests of students and the wider higher education sector in these exceptional circumstances.” These included: “Other unconditional offers to UK students that could materially affect the stability and integrity of the English higher education sector …”, which in theory might have threatened selective institutions aiming to hoover up home students to compensate for a possible shortfall of international students, regardless of the effects on universities less well-placed in the market. But after the government imposed temporary student number controls no-one was in much doubt that the target was precisely those less well-placed, in case students dared to choose them rather than those higher up the league tables. Government policy is that student choice is paramount, but only if students choose the institutions which the government think they should choose.

On 16 July the DfE announced a ‘restructuring regime’ in response to Covid19, a mixture of University Strategic Planning 101 and oddly selective messages about the specific requirements to be satisfied by the minority of universities expected to need ‘support’. The Secretary of State’s foreword said: “Public funding for courses that do not deliver for students will be reassessed. … all universities must, of course, demonstrate their commitment to academic freedom and free speech, as cornerstones of our liberal democracy. … The funding of student unions should be proportionate and focused on serving the needs of the wider student population rather than subsidising niche activism and campaigns. Vice-chancellor pay has for years faced widespread public criticism … equally concerning is the rapid growth over recent decades of spending on administration more broadly, which should be reversed.”

The announcement was much criticised but it receded from view as the threat of ‘restructuring’ diminished. Demand for HE with a 2020 start remained strong, with UCAS numbers higher than expected. The intentions of international students were still in doubt, but attention shifted to the slow-motion shambles of A-levels, and the hardly less shambolic, though less remarked, handling of International Baccalaureate and technical and vocational qualifications. Ofqual and DfE remained committed to their A-levels algorithm, doubling down on the assertion that it was the fairest way to determine grades in this unprecedented situation. This was despite the growing clamour of expert opinion pointing out the many faults and unfairnesses in the approach determined by Ofqual. The DfE/Ofqual response might have seemed resolutely decisive, but was neither transparent nor inclusive. A series of blogs from HEPI and many others provided more transparency than the government and Ofqual statements which had led most people to believe wrongly that ‘teachers are determining grades’ and ‘there is a robust appeal system’.

Scottish Higher assessments followed a similar approach to the English but were announced on 6 August, a week ahead of A-levels. Facing mass public protest, First Minister Nicola Sturgeon admitted on 10 August they had got it wrong; education minister John Swinney the next day announced they would abandon their algorithm and use only Centre-Assessed Grades (CAGs), a reaction which ticked the decisive/transparent/inclusive boxes, albeit after the last minute. The Scots decision sent the English DfE into panic mode. Gavin Williamson had repeatedly nailed his colours to the this-algorithm-is-robust-and-fair mast; he would not follow Scotland’s lead, and there was no sensible alternative. So he went for something that wasn’t sensible – the announcement late on Tuesday night (11 August, just 36 hours before students would get their grades) that students could use mock grades under certain circumstances instead of the algorithm’s grades. It was a decision made without consultation with anyone, so not at all inclusive, and certainly less than decisive, but at least it seemed transparent.

For thousands of students who had taken mocks, it sounded like blessed relief. Not only could they apparently now make an individual appeal (something previously ruled out), they knew it would succeed. But that was late Tuesday night. By Wednesday morning Ofqual, Schools Minister Nick Gibb and Universities Minister Michelle Donelan were doing their best to dilute and obscure the message, saying only that mocks might form part of the grounds for an appeal and even suggesting that not many appeals were expected. Schools and colleges, who had only that day received their students’ grades with shock and horror, pointed out the huge variability and complete lack of standardisation of mocks even within one school, let alone across the whole sector. Williamson stood firm on his ‘triple lock’ – mocks or algorithm grades or Autumn exams. It was presented as a solution for all, when it was nothing of the sort. He had announced that Ofqual (who had not been consulted in advance) would issue guidance on how the new appeals system would work; Ofqual understandably said they would need a few days to work out how to operationalise the process. They issued advice on the amended appeals process by early afternoon on Saturday, suggesting (correctly) that CAGs were a more reliable basis for judgment than mock exams. Then very late on Saturday evening Ofqual withdrew its advice, saying that the Ofqual board would review it and another statement would follow ‘in due course’. Speculation centred on the suspicion that it was the mention of CAGs that might have caused the Department for Education to tell Ofqual to change tack, mostly because of a report in The Sunday Telegraph by the well-briefed Camilla Turner. This was the position at midday on Sunday.

The next day (Monday 17 August) came the final climbdown, as Williamson confirmed that England would follow Scotland in using CAGs rather than the grades determined by the algorithm. Universities were left scrambling to cope with the U-turn, and many students were left wondering whether they still had the place they originally wanted, as many in-demand courses had naturally been filled as usual very soon on the day of the announcement of results, 13 August. Former NUS President and chair of BPP University Aaron Porter wrote for Schoolsweek on 18 August 2020 about the consequences of government ‘passing the buck’ to universities to sort out the A-levels fiasco, and Education Select Committee chair Robert Halfon called for the abolition of Ofqual.

Universities minister Michele Donelan wrote to universities on 20 August 2020 confirming the lifting of all student number controls and the establishment of a task force to oversee clearing and admissions for 2020. She said: “The interests of students were at the heart of the change in awarding results … we all agree that providers should: (1) Honour all offers accepted to date. (2) Honour all offers made and met through the new arrangements for both firm and insurance offers where students would like to take them, wherever this is possible.” That ‘wherever this is possible’ gave everyone a get-out clause, while doing its best to shift the blame away from government and onto the universities, but the blame game picked up speed. A VC’s diary in The Guardian on 21 August 2020 accused government ministers of incompetence and lack of compassion, and it was clear that universities could hardly be blamed for the A-levels mess. Ofqual’s attempts to shift the blame onto schools and colleges were equally unconvincing. It had emerged that the Royal Statistical Society had much earlier offered Ofqual the services of the redoubtable Guy Nason (Imperial) and the statistically legendary Sharon Witherspoon, but the RSS had declined to sign the non-disclosure agreement which Ofqual had proposed. Roger Taylor, chair of Ofqual, wrote to the RSS on 21 August 2020 saying “nothing to see here, you were being much too picky” (we paraphrase), but the next morning Stian Westlake of the RSS was on Radio 4 Today saying the NDA was far too broad and vague to be acceptable.

The first head rolled: Ofqual chief executive Sally Collier stepped down on 25 August with immediate effect; Collier’s predecessor Glenys Stacey was drafted as an interim replacement. Ofqual were summoned to an Education Select Committee hearing on 3 September, and Roger Taylor released a statement just hours before the hearing, memorably summed up by Committee chair Robert Halfon as saying “Not me, guv”. Taylor, it emerges, is also chair of the Centre for Data Ethics and Innovation, which advises the government on artificial intelligence – presumably not including what the Prime Minister called Ofqual’s ‘mutant algorithm’. Taylor made various promises to the Committee of transparency, of which some remain unfulfilled. It was reported that Taylor had kept his chair’s role because he threatened to publish all the correspondence between DfE and Ofqual, showing how much DfE had known all along about the algorithm and its effects.

Samantha Booth reported for SchoolsWeek on 21 August 2020 that Susan Acland-Smith, “has been appointed as second permanent secretary at the DfE for six weeks, temporarily leaving her role as chief executive of the HM Courts and Tribunals Service. The government said she will work “closely” with permanent secretary Jonathan Slater and “support” the department’s response to this year’s exam results.” Slater’s position was said to be under threat, and sure enough, Slater’s departure was confirmed on 26 August, with Acland-Smith becoming his permanent successor.

Taylor, against the odds, remains as Ofqual chair. In an unusual step, the respected Institute for Government Director Bronwen Maddox called for Secretary of State for Education Gavin Williamson to resign, in her 27 August 2020 blog. “The misjudgements in education have been some of the worst the government has made since the start of the pandemic. They were avoidable, given the time available to plan … they are serious in their impact on children’s education, the gap in achievement between social groups and the ability of the nation to get back to work. At the heart of these misjudgements are decisions that could only be made by politicians, not civil servants.” Senior Tory backbencher Bernard Jenkin said Williamson had “lost the trust of his officials to such an extent that he can no longer serve effectively in the cabinet”, according to a report by Toby Helm and Michael Savage in The Observer on 23 August 2020. My HEPI blog on 16 August 2020 about the A-levels debacle said: “for five months the Government and Ofqual have been too secretive, made bad choices, refused to listen to constructive criticism, tried to tough it out and then made the wrong concessions too late.” Not decisive, not transparent, not inclusive, and not how to make policy in a pandemic.

  1. That was the view of Ramathi Bandaranayake and Merl Chandana (both at LIRNEasia, a regional digital policy think tank based in Colombo, Sri Lanka) on the LSE Impact Blog on 1 October 2020.

Rob Cuthbert is Emeritus Professor of Higher Education Management, University of the West of England and Joint Managing Partner, Practical Academics