“Are teenagers getting dumber?”
The Economist recently asked that question after average reading and mathematics performance across OECD countries fell to the lowest levels PISA has ever recorded.
The data are real, and they are serious.
But “dumber” is the wrong conclusion to draw from them.
I hear the individual version every week.
A student looks at a score and says, “I’m just bad at tests.”
A country looks at PISA and asks, “Are our kids getting dumber?”
Same reflex, different scale: turning a measurement into a verdict about ability.
A verdict ends the conversation. A diagnosis starts the work.
PISA is not an intelligence test. It measures whether fifteen-year-olds can use what they know: build meaning from a passage, work through a multi-step problem, and apply knowledge to real-world challenges.
Those are learned capacities. They can be strengthened through practice.
The scores cannot tell us, by themselves, why those capacities have declined. But they should make us ask what students are being asked to practice.
How much sustained reading are they doing?
How often do they work through a difficult problem without an answer appearing immediately?
How often are they asked to explain why one idea follows from another?
I’ve spent twenty-five years teaching students one-on-one. Many arrive believing that a score has told them what kind of learner they are.
The next step is to make the problem specific.
Can the student reconstruct what they read?
Can they explain how they moved from one step to the next?
Can they identify where their understanding breaks?
Once the breakdown has a location, the student has something to practice.
That is the more useful way to read these results: not as a judgment on this generation, but as evidence of what we need to teach and practice more deliberately.
Great learners are built, not born.