5 Proven Ways to Beat the PISA Device Myth
Every few months, the PISA device myth does the rounds again: PISA scores are falling, and screens are to blame. Ban the phones, lock up the laptops, go back to exercise books. It is a tidy story, and it is wrong.
The decline is real. Between 2015 and 2025, OECD average reading scores dropped by 28 points and maths by 22. In the United States, reading fell to 490. Something happened. But when you look at which countries actually held their ground, the “devices did this” theory falls apart fast.
Singapore and Estonia are two of the most tech-saturated school systems in the world, and both are still at or near the top of the table. If screens caused the decline, they should have crashed hardest. They did not. That is the thread worth pulling, and it leads somewhere more useful than a device ban.

The Decline Is Real. The Explanation Isn’t
It is tempting to draw a straight line from “more devices in classrooms” to “lower test scores,” because the timing lines up. Correlation is doing a lot of heavy lifting in that argument. Plenty of things changed for students between 2015 and 2025: attendance patterns, post-pandemic disruption, curriculum shifts, teacher shortages. Devices were one variable among many, not the obvious cause.
Jared Cooney Horvath’s The Digital Delusion makes a useful case against uncritical edtech adoption, and it is worth reading. But even Horvath’s critics point out the same weakness that undermines the device-blame headlines: the data is correlational. It shows devices were present during a decline. It does not show devices caused it.
Singapore and Estonia Broke the PISA Device Myth
Here is the part the headlines skip. Singapore posted 535 in reading and 563 in maths, among the strongest results anywhere, in a school system built around one-to-one devices and heavy digital integration. Estonia sits in the top ten in Europe on the same measures, with a similarly tech-saturated approach.
If device density were the cause of decline, these two systems should be the worst-hit, not the best-performing. They are not exceptions to explain away. They are the evidence that breaks the PISA device myth wide open.
It’s Not Whether. It’s How
This is where the research gets genuinely practical, because it stops being about policy and starts being about pedagogy. AJ Juliani’s analysis of the PISA data draws a sharp line between learning-use and leisure-use of devices. Students using devices for moderate, purposeful learning tasks outperformed both heavy users and non-users. Students using devices mainly for browsing, gaming or passive content consumption did not.
The same split shows up in how students use AI. Students who used AI to evaluate and critique their own draft work outperformed students who used AI to generate the draft for them. We wrote about that exact pattern in the AI confidence trap, where students who let AI do the thinking lost the very judgement PISA is trying to measure.
This is the part the PISA device myth gets backwards. Put simply: a device in a student’s hand is not the variable. What the task asks them to do with it is the variable. That distinction should sound familiar, because it is the same one we made when spotting fake engagement in the classroom. Busy is not the same as thinking. Present is not the same as using well.
England Didn’t Need to Ban Screens
England offers the clearest counter-example to “fewer devices fixes it.” England’s PISA gains over the same period came from a curriculum-first, phonics-and-fundamentals strategy, not a device rollback. Schools sharpened what students were taught and how it was sequenced. Technology was neither the villain nor the hero. It was mostly beside the point.
That should reassure anyone feeling pressure to rip out every laptop cart before term four. The lever that actually moves outcomes is instructional quality: what you ask students to do, how you sequence it, and whether the task demands real thinking. We have made this case before around higher-order questioning, and the PISA data backs it up again from a completely different angle.
- Purpose: what is this device actually for in this lesson, right now?
- Thinking versus completion: does the task demand judgement, or just clicking through?
- Interaction: is the student engaging with content, or just consuming it?
- Opportunity cost: what would students be doing instead, and is that better?
- Professional judgement: would you defend this use of tech to a sceptical colleague?
These five questions, adapted from Amy Kelly’s edtech audit, work as a quick check before any lesson that leans on a screen. If you can answer all five with confidence, the device is probably earning its place. If you are stuck on two or three, that is worth a rethink, not a ban.
What This Means for Monday Morning
None of this is an argument for more screen time, and it is not a reason to keep repeating the PISA device myth in the staffroom. It is an argument for better screen time, and for resisting the urge to solve a complex problem with a blunt policy. Nine times out of ten, the fix is not “less tech.” It is “clearer task.”
Before you write your next unit plan, ask whether the device is carrying the thinking or the student is. If the answer is the device, the task needs redesigning, whether or not you keep the laptops in the room.
Your turn
What is one task in your current unit where a device could be doing the thinking instead of your students? Drop it in the comments, we would love to help you redesign it.
References
Horvath, J. C. (2025). The Digital Delusion: How Classroom Technology Harms Our Kids’ Learning, and How to Help Them Thrive Again. Penguin Random House.
Juliani, A. J. (2026, September). What the PISA results really show us about technology and curriculum. AJ Juliani. ajjuliani.com
Kelly, A. L. (2026, July). 5 questions elementary teachers can ask to evaluate their edtech use. Edutopia.







