Chapter 1 · The Problem
I studied in four countries. The lecture halls were different. The problem was identical.
During my master's, I had the chance to study and work across Europe and beyond — different universities, different systems, different cultures. And yet, in every lecture hall I sat in, I noticed the same thing: a teacher presenting slides to a room full of students who were either quietly lost or quietly bored, with no real way to signal either.
The teacher couldn't know who understood and who didn't. Students couldn't ask questions without the social risk of raising their hand in a packed amphitheatre. The classroom was one-way broadcast and it had been for decades.
"The classroom was one-way broadcast. The teacher talked. The students absorbed what they could. And at the end, nobody really knew what had landed."
I talked to teachers about it. They knew the problem too — they'd lost count of the times they'd asked "any questions?" and been met with silence, only to discover in the exam that half the class had missed a fundamental concept. The feedback loop was broken. By the time a teacher found out something hadn't landed, it was three weeks too late.
Chapter 2 · The Solution
After my master's, I built the tool I wished had existed in every class I'd attended.
I graduated with a master's in September 2025, and instead of going straight into a traditional job, I decided to build. I had seen the problem clearly enough. I understood what was missing. And I had the technical skills to do something about it.
The idea was simple: give the teacher a live window into the room as they present. Not a survey after the fact — something live, in the moment, that doesn't interrupt the flow of the lesson. And give students a frictionless, anonymous way to say "I'm lost" or "I have a question" without the social risk that usually stops them.
I built Diaposi to plug directly into what teachers already do. No new workflow. No new tool to learn. You drag in your existing slides, share a code, and in under 30 seconds your classroom is alive with real-time reactions, comprehension signals, and live questions — all without a single student needing an account or an app.
"I didn't want to replace the lecture. I wanted to make it breathe — to give teachers the feedback they were missing, and give students a voice they'd never had."
Chapter 3 · Why Higher Education
Universities were the obvious starting point. But the problem goes much further.
Higher education is where the gap between what's taught and what's understood is most costly and most invisible. A student who falls behind in week three doesn't always ask for help. They sit through the rest of the semester struggling, and by the exam it's too late. Diaposi gives teachers an early signal system: not after the course ends, but slide by slide, session by session.
For institutions, the value isn't just pedagogical — it's operational. When a faculty can see, at scale, which concepts are consistently misunderstood across dozens of sessions, they can redesign their curriculum around evidence rather than assumption. Diaposi turns every lecture into a dataset.
But the feedback I've received goes beyond universities. Secondary schools, corporate training departments, professional certification programmes — anywhere people teach groups and need to know if the message is landing. The problem is universal. The solution scales.
"When a faculty can see which concepts are consistently misunderstood across dozens of sessions, they can redesign their curriculum around evidence rather than assumption."
Chapter 4 · The 2026 Context
The trends that make this the right moment.
Education is changing faster than institutions. Here's why live engagement isn't a feature — it's a necessity for the classrooms of 2026.
Attention spans are the new attendance metric.
A meta-analysis of 225 studies found students in traditional lectures are 1.5 times more likely to fail than students in active classes (Freeman et al., PNAS 2014). Students are in the room — but engagement has to be earned, slide by slide. Tools that measure attention in real time aren't optional extras anymore. They're infrastructure.
Teachers are burning out on guesswork.
In every lecture hall I worked in, across four countries, teachers said a version of the same thing: they spend enormous energy preparing content and get almost no feedback on what actually worked. Diaposi closes that loop — the session report gives teachers something they've never had: evidence.
Students expect to participate, not just observe.
Students arrive from platforms built on real-time reaction — games, live streams, comment threads — and then sit in a room where the only way to speak is to raise a hand in front of two hundred people. Tools that let them react, vote, and ask questions anonymously match how they already engage with everything else.
Institutions need data to justify their teaching models.
European quality assurance standards (ESG 2015, Part 1) put learning outcomes and student-centred learning at the centre of what institutions must evidence. Engagement data — per slide, per student, per session — gives them the reporting layer to show active learning isn't just a buzzword.
Chapter 5 · Why It Matters
What Diaposi does to the energy in a room.
There's something that happens when a teacher can see, in real time, that 78% of their students just tapped "Got it" — and that three students have raised their hands while nine are asking the same question. The lecture stops being a monologue. It becomes a conversation. The teacher adjusts pace, revisits a concept, calls on a raised hand. And students feel it — their input actually changed something.
That feedback loop is motivating for both sides. Teachers told me they feel more confident in the room when they have data. Students told me they pay more attention when they know their reactions are visible and meaningful. Diaposi doesn't just measure engagement — it creates it.
A live comprehension pulse on screen is a quiet signal to the class that the lesson is responsive. A "slow-down alert" that fires when too many students fall behind isn't just a teacher tool — it's a signal to the whole room that nobody gets left behind. That changes the culture of the lecture.
"Teachers told me they feel more confident in the room when they have data. Students told me they pay more attention when they know their reactions are meaningful."
Where we're headed
Diaposi is just getting started.
We're working with institutions across Europe to roll out Diaposi at scale — from individual faculty pilots to institution-wide deployments. If you teach, if you lead a department, or if you're building the future of education technology, we'd love to hear from you.