Is It a Won’t or a Can’t? Understanding Student Disengagement Through a Neurobiological Lens

Throughout my career, I have mentored many educators. One of the most important questions they return to, again and again, is this: when they see disengagement or concerning academic performance, how do they determine whether it is a won’t or a can’t?

Just the other day, I was speaking with a colleague who is a counselor about students who appear capable yet disengaged. We were discussing how quickly stalled output can be viewed as lack of effort in the classroom setting. She smiled and said, “I literally say the same thing to teachers when they ask for my advice.” I knew exactly what she meant; the won’t or the can’t. We smiled knowingly.

Why does that distinction matter so much? Because neurobiology impacts learning. Learning is often state dependent; availability for cognition shifts with nervous-system regulation. When behavior is misinterpreted as choice, correction follows. When limitation is recognized, support follows. That awareness can alter the trajectory of a moment for a student — and sometimes an entire school year.

For many parents, the most confusing moments are not when a child struggles in a subject they dislike. It is when they begin to disengage from something they once loved. The child who talks endlessly about science but refuses the assignment. The teen who reads novels until midnight but shuts down in English class. The student who insists they can, yet cannot seem to begin. When care does not mirror engagement, particularly as demands increase, availability is often the limiting factor.

What we now understand from neuroscience is that preference does not simply override physiology. A child’s nervous system must be sufficiently regulated for higher-order thinking to be accessible; when regulation is strained, reasoning becomes taxing, even when the desire to do well is present. This is not laziness. It is not indifference. It is not a lack of caring. It is neurobiology. Dysregulation does not simply refer to a fleeting mood or a difficult morning. It can also reflect a learning difference, a processing difference, executive functioning load, sensory strain, or developmental variability that is present every day. For some children, what appears to be resistance is actually a nervous system working harder than we can see.

This also helps explain why a child may happily engage in preferred activities at home for hours, yet struggle with school-based tasks. In the home environment, signals of safety are often stronger; expectations tend to be more predictable, and the nervous system is not bracing for evaluation or performance. When the nervous system settles into a parasympathetic state of safety and connection, higher-order thinking becomes more accessible; when it shifts into sympathetic mobilization, cognitive resources narrow.

So how do we begin to determine whether we are seeing a won’t or a can’t? We look for patterns. Does engagement fluctuate with context? Does performance shift depending on who is present, what the task requires, or how much processing load is involved? Does your child express frustration about wanting to do well yet struggling to begin? When adults assume won’t in the presence of can’t, pressure increases. Pressure heightens dysregulation; dysregulation further reduces availability. The cycle intensifies. When we instead begin with curiosity and connection, seeking to understand what may be constraining availability, we create the conditions under which fluid thinking can return. Supporting regulation does not lower expectations; it promotes availability.

You may not be able to change what is happening in the classroom immediately however, even a subtle shift in how you interpret these moments at home can reduce escalation and preserve connection. When the focus moves from effort to availability, conversations often change. Patterns become clearer. Capacity is distinguished from a character flaw; what appears to be defiance may in fact be a limitation.

So how might you begin the conversation with your child's teacher? Instead of asking why your child will not complete the work, you might ask what conditions seem to support their availability. Rather than debating effort, you might invite exploration of patterns.

If you are struggling to discern won’t from can’t but know something in your child’s learning is not clicking, trust that instinct. One way I support families is by helping parents interpret what they are experiencing, identify meaningful patterns, and build partnership with schools so expectations and access remain in sync. If that perspective would be helpful as you navigate your child’s learning profile, I invite you to schedule a complimentary call. Together, we can determine what will best support your child’s availability for learning.

Because every child deserves the chance to flourish.