How Data Could Be Used to Make Teaching And Learning Better in Schools
When data helps us honour teachers and lift student achievement
Teachers are always collecting data on students before anything appears on a spreadsheet.
They notice the way some children don’t speak up in class or if they hesitate to do so. They notice the way a student’s confidence changes after a difficult week, or the confidence that grows when students speak out and make good contributions to a class discussion.
They can see the patterns that reveal whether learning is happening and they can see the students that are getting left behind.
This kind of data tells teachers more about students’ learning than looking at figures or codes on a spreadsheet.
Often, the formal data that schools collect overshadows the professional judgement teachers use every day. Numbers become the headline, and the story behind them is lost. When this happens, teachers feel that they aren’t valued as students are sorted into categories and labels are attached to them.
But when data is used carefully, it becomes one of the most powerful tools we have for valuing teachers’ work and helping students achieve well.
I can imagine a school where data is not a mechanism for surveillance but a mirror that reflects the quality of teaching. In this kind of environment, data highlights the strategies that are working, the relationships that are making a difference, and the small shifts in practice that quietly transform learning.
Teachers feel recognised for the expertise they bring, because the data is interpreted through the lens of their professional knowledge rather than away from it. Instead of being asked to justify their work, they are invited to explore how they have taught using the data as a backdrop to a collaborative discussion.
A school like this also understands that teachers speak more openly when data is not used competitively. When teachers know that their class results will not be compared to the classroom next door, they are far more willing to share what is actually happening.
They discuss the students who are struggling, the units that need reevaluation, and the strategies that are working well. They ask for help without fear of judgment, and they offer support without feeling superior.
Students benefit from this teacher collaboration. When teachers feel safe to speak candidly, they collaborate more deeply. They share resources, analyse patterns together, and design next steps that are grounded in collective wisdom rather than isolated effort.
Students experience a more coherent curriculum because their teachers are working together to improve their learning experience, rather than in competition with each other. Teaching is adapted to their needs because their teachers have the psychological safety to say, “This part of the lesson didn’t land the way I hoped, can we rethink it together?”
To show what this looks like in practice, here are two stories from my own experience, moments when data, used with care, brought a department closer together and helped students move forward.
Discussing writing samples in an English Department meeting
I remember the first time I saw how powerful a non‑competitive data conversation could be. In 1995, I was a trainee teacher and part of my training was observing how teams of teachers worked together to design interventions that could help to improve teaching and learning.
It was the end of Term 2, and Caroline, head of the English department had collected a set of writing samples from every class. As head of department, she spread the samples across the table before the meeting began, to help everyone see the bigger picture.
When the team arrived, she said:
“I’m curious about what you’re noticing in your students’ writing. What stands out to you when you look across these samples?”
There was a moment of hesitation, the kind that comes from years of data being used as a stick rather than a tool. But then one teacher said, “My students are struggling with putting together paragraphs that read well. I can see it clearly now that I’m looking at these side by side.”
Another teacher nodded. “Mine too. I thought it was just my class, but it looks like a pattern across the year group.”
No one was being judged, and no one was being compared. The data had become a shared reference point rather than a scoreboard.
Her department spent the next hour discussing strategies, modelling examples, and agreeing on a simple, consistent approach to teaching paragraph structure.
The following term, there was an improvement in the way students put together their paragraphs. They wrote with greater clarity and confidence, because they were supported by teachers who had worked together to improve their learning experience.
The maths assessment that brought us together
Another moment stays with me from my time leading a maths team around 10 years into my teaching career.
Maths teachers had just completed a common assessment for six classes of 12 and 13-year-old students. The results showed a noticeable dip in students’ understanding of fractions. Instead of presenting the data as a problem to be solved or something to be explained, I approached the conversation with curiosity.
“I’m wondering what you think might be underneath this pattern,” I said as we gathered around the table. “What have you been seeing in your classrooms that helps make sense of these results?”
One teacher spoke first. “My students can manipulate the numbers, but they don’t really understand what the fractions represent. They’re following procedures without grasping the concept.”
Another added, “I’ve noticed the same thing. They can complete the worksheet, but when I ask them to explain their thinking, they don’t know how to explain their methods well.”
The conversation continued, delving beneath the surface of the data that everyone could see.
Teachers shared examples, compared notes, and began to see the assessment not as a judgement of their teaching but as a window into their students’ thinking. Together, we designed a series of hands‑on lessons using fraction tiles, number lines, and real‑world contexts.
Teachers had more discussions in their lessons about fractions and the thinking behind the processes used to work with them. Students engagement with the topic improved and so did their result in the next assessment a couple of weeks later.
What made the difference was the way we had talked about the data in front of us.
We’d worked with the language of enquiry and asked open questions like: What do you notice? What might be happening here? What could we try next?. Together as a group of teachers we created a space where we all felt respected and contributing to shaping learning in a way so that students could benefit from the collective expertise of the team.
Why this matters
When data is used to honour teachers rather than scrutinise them, it strengthens the entire fabric of a school. Teachers feel trusted and students feel understood.
Leaders make decisions that are grounded in reality rather than assumptions. The work becomes more sustainable because the emotional climate shifts from pressure to partnership.
If we want students to achieve well, we must create conditions where teachers can do their best work. That begins with using data in ways that illuminate rather than diminish, support rather than compare, and deepen understanding rather than flatten it. When we do this, we create a culture where learning thrives because the people who make learning possible feel valued, respected, and heard.
Over the last 30 years as a high school teacher and leader of a department for over 8 years, I’ve had time to put together a script that helps teachers analyse and use data well to improve teaching and learning.
The practical script
If you found this essay helpful, the real transformation happens in the paid subscriber section, where I’ve included a ready‑to‑use script designed to help your department:
run humane, collaborative data conversations
ask better questions that deepen insight
build trust rather than competition
agree on next steps that genuinely support student learning
It’s the script I used as a head of department to keep meetings open and productive.
If you’d like access to that script, and future tools designed to make your professional life lighter and more aligned, please consider upgrading to a paid subscription. It supports my work, and it gives you access to the practical resources that turn these ideas into real change in your school.
I’d love to have you join us.
