AI Cheating Fears and Digital Marking Meltdowns Drive Student Protests Across Three Continents

Key points

• Nearly 60,000 university applicants in Mexico were forced to resit entrance exams in 2025 after widespread suspected cheating tainted the original results.
• Portugal triggered what commentators called its worst education crisis in decades after a push to digitise school exam marking went badly wrong.
• Student protests linked to exam failures, suspected cheating and grading errors broke out across Mexico, Portugal and India in the same season.
• Delayed university places, extra stress and, in some cases, a year lost to the admissions queue are the real costs for families.

Summer is usually when exam anxiety goes quiet. Grades arrive, families exhale, life moves on. Not this year.

In Mexico, Portugal and India, the private stress of exam season spilled into the streets. Mass protests and government apologies landed in the same few weeks, reported by The Guardian. The causes differed by country. One theme ran through all of them: the pressure to score well in a brutal job market collided with systems that failed students at the worst possible moment.

What actually went wrong in each country?

Mexico's crisis is the one we've been tracking closest. Our 3 August story covered how AI proctoring software flagged mass irregularities at UNAM's entrance exam, where nearly 160,000 applicants sat the test remotely, watched by AI instead of human invigilators. The results looked nothing like any previous year, and roughly 60,000 students faced a retake. In Mexico, a single national entrance exam can decide whether a student gets a place at all. Miss the cut, wait another year.

Portugal's problem was different but arguably messier. Officials replaced traditional paper-based marking with a digital system, meaning examiners scored students' work on screens rather than printed scripts. The rollout failed. Marking errors multiplied. Students who'd studied for years found their grades unreliable, and the country entered what education observers described as its worst schooling crisis in decades.

India added a third front, with student unrest feeding the same basic frustration: high stakes, scarce places and a sense the system had let people down.

What does this mean for students and families?

For the 60,000 Mexican students forced into resits, the immediate costs were time and raw anxiety about whether a second attempt would count fairly. Some will have lost their place in the admissions cycle entirely.

Portuguese students face a longer uncertainty. When a digital marking system produces unreliable scores, there's no quick fix. Appeals take months. University offers get delayed.

The broader signal is uncomfortable. Across all three countries, a single exam result can genuinely shape a life. That makes every technical failure or cheating scandal feel less like an administrative hiccup and more like a crisis. Denmark has moved to require students to defend AI-written essays aloud, as we reported on 6 August, and more countries will face versions of this same reckoning.

Common questions

Is AI cheating actually behind the Mexican scandal?

Authorities suspected cheating without, at time of writing, confirming AI tools as the specific method. The investigation was still ongoing when this story broke.

Could the same thing happen with digital marking in other countries?

Yes. Many education systems are moving exam marking online to cut costs and speed up results. Portugal's experience shows that rushing the transition without thorough testing produces exactly the kind of errors that destroy student trust.

What can students do to protect themselves?

Keep every piece of evidence you have: rough notes, draft answers, timestamps on submissions. If grades look wrong, appeal quickly, because most systems have tight deadlines for formal challenges.