This is a leader from The Economist of September 6th, 2025.
Back in the 20th century, bored scholars had to make do with flicking rubber bands at their classmates, doodling in their textbooks or staring out of the window. Modern technology has revolutionised slacking. Most teenagers in the rich world own smartphones. Many are allowed to bring them into classrooms, where each provides a bottomless source of apps designed to be as compelling — and distracting — as possible.
A backlash is under way, as parents and teachers worry about the effects on classroom performance. On August 27th South Korea passed a ban on smartphones in classrooms. Governments from China to Finland, as well as dozens of American states, have introduced bans and restrictions of varying severity. The Economist is queasy about micromanaging the job of head teachers to such a degree — but schools that still welcome smartphones would be wise to think again.
This may seem fusty and technophobic. It is not. Even diehard libertarians agree that children do not always know what is in their own interests. Nor does banishing phones from maths lessons mean depriving children of experience with modern technology. They get plenty of that outside school; gaps can be patched up in dedicated lessons.
Technophiles like to point to a long history of misplaced scepticism about technology and its impact on education. A favourite example is Plato, who complained about the baleful effects of writing on the grounds that storing facts and arguments on scrolls would erode pupils’ ability to remember them. But just because Plato was wrong two thousand years ago does not mean that today’s worries are misguided.
Plato never put his claims to the test — whereas a growing body of research suggests that phones are indeed bad for schoolchildren. A recent study, run by an international team of academics and conducted in India, was a randomised controlled trial, the gold standard. As we report this week, it followed 17,000 higher-education students for three years. It concluded that requiring phones to be left outside classrooms led to a small but measurable improvement in grades. The weakest students benefited most of all.
Admittedly, the evidence is not yet overwhelming. The Indian study found only small gains. Its results contain quirks (they suggest, for instance, that bans lift performance in the first and third years of a degree but not in the second, which is odd). Although its conclusions match those of studies in England and Spain, one in Sweden found that bans had no effect.
Yet most educational interventions have only a small effect on grades. Scientists and researchers can afford to wait for the evidence to improve before issuing a final verdict, but teachers cannot. They must do the best they can for children in their classrooms with whatever evidence is available today.
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We are now a few weeks into New York State’s ban on smartphones in school classrooms. Of course lots of other stuff goes on in the world, but thus far we’ve heard little reaction. It doesn’t seem anyone’s too bent out of shape. A brief item on WNYC radio yesterday morning brought ringing endorsement of the cell-phone ban from the few school teachers who responded. They reported that the removal of cell-phones had led to much improved interaction between students, both in class and out. Most vociferous objectors in the build-up were those parents who had worked themselves into a panic over the fact that their children could not call them (or 911) at any moment if they didn’t constantly have their iPhones in their pockets — can’t they remember that they themselves managed to survive this dire condition when they were in school?
I heard the other day of a senior teacher at an English regional university who was going to retire because his students wouldn’t pay attention any more and just turned in papers generated by AI most of them unedited. When I mentioned this to a current student, her reaction was “These old men shouldn’t be teaching us anyway”! Perhaps a bit harsh, but it is of course the teacher’s job to adapt to current conditions and to figure out how best to teach pupils. Teachers are being paid to do this, and the students deserve value for the money they are paying, not just an abdication of responsibility in the face of a difficult new problem. Smartphones exist, and college students have access to them, to AI, and to all the facts that can be looked up in an instant. Facts are no longer something that need be remembered: it’s almost a waste of brain space to fill it with dates of battles, lists of kings, and all those facts, when they can be instantly accessed via that brain-backup harddrive in our pocket. There are no longer many facts that we don’t all “know” almost immediately: an amazing development when you think about it. Educators who worry that their student’s heads, absent “facts”, will just be an empty void are simply being offensively condescending. It’s up to them to figure out how to teach in the modern world: that’s the job. That same student mentioned above is currently doing exams (at the University of Sussex) which allow the students to take books and smartphones into the exam hall, but make them turn in their answers in handwritten form. Invigilators walk around to see that AI’s not being used — but even if it did sneak by, having to write out the answer by hand seems to guarantee that the unthinking acceptance of its output is not very likely. It’s a test of their skills in presentation of facts not of their knowledge of facts. Nobody promised university teachers when they got the job that nothing would ever change, and that they could just coast through life doing over and over again exactly what they had done the year before. If they really find the situation unbearable, then retirement seems like a good idea.
An interesting side effect of all these digital developments is the fact that students are not buying printed books any more — or at least are not buying books for course work any more. (Most of them do seem quite happy to read books for pleasure.) Everything the university student is expected to have read is provided online: no doubt we’ve all decided that this appropriation of content is covered by the fair use exemption to the copyright law. The University of Sussex no longer has a campus bookstore: John Smith’s Bookshop, next to the library, appears to have shut down in 2019.