The lesson was the same in every classroom: quadratic equations, that gateway topic where the x suddenly comes with a square attached and a good many fifteen-year-olds quietly decide maths is not for them. Same material in Santiago, in Shanghai, in Madrid and Manchester. What differed, classroom to classroom, was the person standing at the front, and specifically how that person felt about being there. Some teachers were enjoying themselves. Others, frankly, were fed up.
That difference, it turns out, ripples a surprisingly long way. A study published in the Journal of Educational Psychology finds that a teacher’s emotions during a lesson are quietly bound up with how confident, interested and capable their students end up being.
The researchers, led by Marina Elena Pfeifer at Ludwig-Maximilians-Universität München, drew on the OECD’s Global Teaching InSights study, an unusually rich dataset covering 679 maths teachers and more than 17,500 students across eight countries: Chile, China, Colombia, Germany, Japan, Mexico, Spain and the United Kingdom. Everyone taught or sat the same unit on quadratic equations, which made it possible to line up classrooms fairly against one another despite the obvious cultural gulfs between them. Teachers reported how much enjoyment and how much anger they felt while teaching their target class. Students, meanwhile, rated their teacher’s classroom skills, said how confident and interested they felt, and then took a 25-question test.
“We decided to conduct this research because teaching is not only an intellectual activity but also an emotional one,” says Pfeifer. The team wanted the full causal chain, from feeling to outcome.
It Travels Through the Teaching, Not Around It
Their hunch was that emotion does not act on students directly so much as it works through the craft of teaching itself. “We hypothesized that a teacher’s emotions act as a domino effect in the classroom, linking to student outcomes indirectly through the quality of their instruction,” Pfeifer says. So they zeroed in on three things students can actually perceive: how well the teacher kept order, how supportive the relationship felt, and how much the lessons pushed them to think hard, a quality researchers call cognitive activation.
The dominoes fell more or less as predicted. Teachers who reported enjoying the work were rated higher on all three counts, and their students tended to come out more self-assured, keener and better at the maths. Anger pulled everything the other way.
What did most of the heavy lifting was that third ingredient, the cognitive push. When a teacher who was enjoying themselves set tasks that demanded real thinking, that pathway alone accounted for a sizeable chunk of the boost to students’ confidence and their test scores. Classroom management mattered too, though mostly for stoking interest rather than performance. And here the data threw up something genuinely odd: warm, supportive teacher-student relationships were sometimes linked to lower test results, not higher. Pfeifer’s reading is that this probably reflects teachers ladling on extra emotional support precisely when they can see a class is struggling. A correlation running backwards, in other words, rather than kindness somehow making children worse at algebra. (The statisticians among you will recognise a whiff of multicollinearity here; the authors flag it too.)
The other striking thing was how little the borders seemed to matter. “Despite considerable cultural, economic and linguistic differences, the mechanisms by which a teacher’s emotions shape teaching quality and student outcomes remained remarkably similar across the globe,” says Pfeifer.
That said, this is a snapshot, not a film. The data were gathered at a single point in time, so the study can show that these things travel together but can’t prove which one is driving the bus. It is entirely plausible, as the authors readily concede, that the arrows sometimes point the other way: a difficult, disengaged class can sour even a cheerful teacher’s mood, and the emotions are measured by self-report, with all the rosy-tinting that invites.
From Nice-to-Have to Infrastructure
Still, the practical thrust is hard to wave away, and it lands at a moment when teacher burnout is a live worry in a lot of school systems. If a teacher’s mood is not incidental to learning but part of the machinery of it, then looking after that mood stops being a perk and starts being infrastructure. Pfeifer puts the underlying point bluntly: a teacher’s emotions, she says, are not merely a byproduct of the educational process “but an active contributor to it.” The team points to things like cutting needless workplace stress and offering mindfulness-based training, which earlier trials have linked to lower burnout among teachers. The worry, as they describe it, is that the emotions can become self-feeding. An angry teacher manages the room worse, the class does worse, and the disappointment feeds the anger; a teacher who is enjoying it gets the opposite spiral, success breeding more joy breeding more success.
Whether you can deliberately nudge a teacher from the first loop into the second is the question worth several follow-up studies. But it reframes something we have perhaps always half-known and rarely acted on: that the feeling in the room is not the weather around the learning. It might be a good part of the learning itself.
Frequently Asked Questions
Does a teacher being in a good mood really change exam results?
Not directly, according to this study. The link runs through teaching itself: teachers who enjoyed the lesson tended to set more thought-provoking tasks and run a calmer room, and it was those practices that tracked with higher confidence and better test scores. Mood seems to shape the craft, and the craft shapes the outcome.
Why would supportive relationships be linked to worse performance?
It looks counterintuitive, but the researchers suspect the cause and effect are flipped. Teachers likely pour extra warmth and support into classes they can see are struggling, so the support is a response to weak performance rather than a cause of it. There may also be a statistical quirk at play, since the three teaching qualities overlap heavily.
Do these patterns hold outside Western classrooms?
That was one of the headline findings. Across all eight countries, including China, Japan, Chile and Colombia, the basic machinery linking teacher emotion to teaching quality to student outcomes looked broadly the same, even though how much emotion teachers reported varied. The authors lean on the idea of “relative universality” to describe it.
Can schools actually do anything about this?
The study itself doesn’t test interventions, so this is the open frontier. The authors point to reducing avoidable job stress and to mindfulness-based programmes, which earlier research has tied to lower teacher burnout. Whether nudging teachers toward enjoyment reliably lifts student outcomes is something future, longer-term studies will need to pin down.
DOI / Source: https://doi.org/10.1037/edu0001036
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