糖心Vlog

Academics ‘marking students down’ when they suspect AI use

Divergent attitudes towards the use of AI in assessments risks weakening the credibility of academic certifications and driving mistrust between students and teachers

Published on
September 22, 2025
Last updated
September 22, 2025
Marking exams
Source: iStock/Fabrique Imagique

Some academics are marking down students who they believe have used artificial intelligence (AI), even in instances where it has been permitted in assessments, a study has found.?

A published in Studies in 糖心Vlog?argues that the use of AI in assessments has created a “messy grading space full of tension and inconsistency”.

Researchers interviewed 33 academics from China’s Greater Bay Area. Some of the academics’ universities did not have specific AI policies, while others did.

They were asked?how they handled marking when they suspected AI use or where students had declared their use of the technology.?

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Overall, the study found that academics were influenced in their marking by their perceptions of AI use, and that such technologies have “complicated values that have long been celebrated in student work, such as originality and independence”.?

One academic told the study, “I think this is dishonesty and tells a lot about the student’s integrity…If the student cheats by using AI and thinks they can get away with it, as the teacher, I need to do my job”.

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Another said: “If two assignments demonstrate the same quality, but B can independently complete it without AI, doesn’t this show B is more capable and deserves a higher grade?”

When it was pointed out that the assessment guidelines allowed student AI use as long as it was declared, academics changed their minds, highlighting the “tension” between the “legitimacy” to use AI, and the “traditional emphasis on independence as a marker of intellectual capability”.?

Lecturers in the humanities were more likely to be critical of AI use and consequently penalise students by docking marks, reflecting wider concerns in these fields that AI is a “shortcut that undermines essential processes towards learning”.


Campus spotlight guide: Bringing GenAI into the university classroom


Report authors Jiahui Luo, assistant professor at the Education University of Hong Kong, and Phillip Dawson, co-director of the Centre for Research in Assessment and Digital Learning at Deakin University, noted that academics’ expectations of AI “are often implicit and not openly communicated to students”.?

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They told 糖心Vlog:Most assignments currently fall into a ‘middle ground’, where AI use is neither explicitly prohibited nor required, but students are expected to declare their AI use.?

“This creates variability in how students approach their assignments – some reported using AI heavily, others minimally or not at all – but how these various uses of AI are interpreted by teachers and subsequently factored into their grading remains unclear.”

If left unaddressed, “this will likely result in weakened credibility of academic certifications, distrust from students, and unfairness”, said Luo.

The paper argues that “validity” in marking could “offer a pathway forward”, whereby there is a clear understanding and expectation, from both staff and students, of “what a particular task is meant to assess”.?

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“Through a validity view, the use of GenAI could be justification to mark down student work if (and only if) it meant that students were not able to demonstrate they had met the outcomes being assessed,” it says.

For example, under this model, it would be fair to mark down a student studying languages who had used AI in their work, because “the use of GenAI had interfered with students’ ability to showcase their writing skills”.

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It is “crucial” that academics provide students with “explicit” declarations on how GenAI use in assignments could impact grading, the paper says, recommending that universities organise workshops to ensure that lecturers align grading practices with their educational goals.

juliette.rowsell@timeshighereducation.com

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Reader's comments (8)

Is no one aware that different disciplines have different approaches to different forms and uses of AI? This "report" is worse than useless? "Divergent" rather than "different"? Come on!
"Another said: “If two assignments demonstrate the same quality, but B can independently complete it without AI, doesn’t this show B is more capable and deserves a higher grade?” Well you can only mark the assignment as you have it. So you have to give the same grade unless there is a demonstrable infringement that can be penalised. Otherwise you might just as well mark up the students you like as you have no criteria. I am not sure what it is like elsewhere but in the UK system a student could appeal and would win if marking is so impressionistic and based on deserving rather than achievement. Suspicion is not enough.
I don't know what university you are at, but at every UK university I've worked at appeals on academic judgement are automatically disallowed. Appeals may only be on process, not judgement.
Well my friend I don't know what Universities you have worked at but the days when we could excercise "academic judgment" without it being subject to appeal where the student is disatisfied are, in my experience, long gone! And in the case we are putting it is not a matter of "academic judgment" is it? But a suspicion that AI has been used inappropriately, which is an entirely different matter. If you were to mark a piece of work down for such a reason you would have to be able to demonstate that this was the case during an appeal process. And what of the case where the AI improves the quality of the work? Your "academic judgement" would thus have to reward the wquality of the work itself, not your unproven suspicions. Please do try and keep up with the rest of the class! You may huff and you may puff my friend, if that is what you wish to do, but the AI revolution will bring your ivory tower crashing down around you!
Not sure if this is much help for us really? We need proper data really not just this flim flam
I suspect that I mark AI generated work down, but not out of a specific penality for AI use, but rather that AI work is often suboptimal. Its not always that there are large errors in it (although sometimes there are), but lots of little things that add up. Cliched turns of phrase (or even worse, cliched turns of phrase that have been paraphrased), slightly incorrect references, repeating of common misconceptions that i've gone out of my way to dispell in lectures, too heavy a reliance on bullet points and lists. All of these things are common with AI generated material, but I won't be mark down a piece of work containing them because it was AI generated, but rather because it contained these things.
Well that is fair enough but the real question my friend is if the work was AI generated but did not contain all those "suboptimal" points would you still mark it down? And what it you don't spot those suboptimal points because the student has cleaned up the scene of the crime like one of those expert MI5 officers after the assassination?
The very second AI comes into the picture, the entire assessment framework changes. That's the key prob here. The use of AI even in minimal way, already strongly implies co authorship. And logically, it is NOT really possible to separate Ai input from the human script. So this debate is somewhat of a waste of valuble time? How to assess academic scholarship knowledge production WITH AI assistance (properly, more accurately, professionally and fairly) is and remains the overarching question of the day. There simply is no other way, (unless of course AI is banned outright from the university which realistically cannot/won't happen).

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