What Your Eyes Reveal About Your Expertise

Discover what expert teachers' eyes do differently, and how that knowledge can improve teacher training.

Imagine standing in front of a classroom of thirty teenagers. You are halfway through explaining a math problem when a student in the front row shoots their hand up enthusiastically. At the same moment, a student in the back corner starts loudly imitating their classmate, drawing snickers from the row beside them.

Two things happen simultaneously. Where do your eyes go?

Gaze Entropy: Reading Expertise Through Eye Movements

New eye-tracking research published in Learning and Instruction reveals that the answer to that question depends entirely on your level of expertise. And the difference shows up directly in your eyes.

Researchers equipped 15 expert teachers and 18 novice teachers with eye trackers while they watched a video of a real math lesson. The video included several small disruptions and one major incident: a student loudly imitating a classmate for about four seconds.

What they measured wasn't just where teachers looked. They tracked the sequence of eye movements across the room and calculated something called gaze entropy, a measure of how predictable and stable a visual scanning pattern is. Low entropy means structured, deliberate scanning. High entropy means scattered, reactive looking.

The results were clear. Expert teachers scanned the room in consistent, repeating routes before the disruption even happened. When the incident broke out, their gaze shifted to the student, just like the novices. But within seconds, they were back to scanning the rest of the room. Novices stayed stuck. Their eyes remained fixed on the disruptive student long after the incident was over, losing sight of everything else happening around them.

Training the Master's Gaze

The good news is that this master's gaze is not a gift. It is a skill that can be trained.

The researchers point to Eye Movement Modeling Examples (EMMEs) as a concrete tool for teacher education programs. The concept is simple: let novice teachers watch a classroom video while seeing the eye movements of an expert overlaid on the screen. They literally look through the eyes of someone who already knows where to look and when to move on.

This kind of explicit visual scaffolding accelerates what would otherwise take years of classroom experience to develop. Instead of learning through trial and error in front of thirty real students, novices get a shortcut. They see the routine before they have to perform it.

Teacher training programs can apply this in practice by integrating short EMMEs sessions into existing curricula. Show student teachers an expert scanpath during a disruption. Pause it. Discuss why the expert moved on when they did. Then let novices practice the same video and compare their own eye movements to the expert's.

The goal is not to copy the expert's exact route. It is to build the underlying habit: scan wide, register the disruption, and return to the room.

Seeing It in Action

Picture a teacher training program that adds one simple element to its curriculum: a ten-minute video session where student teachers watch a classroom recording with an expert's scanpath overlaid on the screen.

Before the session, most novices say they would have handled the disruption by addressing it directly and waiting until it was fully resolved before moving on. After watching the expert's eyes, they see something different. The expert barely lingers. They clock the disruption, make a decision, and their gaze is already moving back across the room before the incident is even over.

That moment of recognition, seeing the routine in action, is what EMMEs make possible. It turns an invisible mental skill into something you can actually observe, discuss, and practice.

Take-home points:

• Expert teachers scan their classroom in a stable, predictable routine before any disruption occurs

• The real difference between experts and novices is not who notices the disruption first, it's who moves on from it fastest

• Novice teachers get visually stuck on a disruption, losing sight of the rest of the room

• This skill is not innate, it can be trained through Eye Movement Modeling Examples

• Showing novices how an expert's eyes move is faster and more effective than years of trial and error