Designing Environments That Help ADHD Brains Work

In many classrooms and homes, support for students who are struggling often focuses on behaviour.

Try harder.
Stay on task.
Be more organised.

While these expectations are understandable, they can sometimes overlook a critical factor:

The environment in which the student is trying to function.

For students with ADHD or executive function challenges, the environment plays a powerful role in determining whether they can focus, plan, and complete tasks. Executive function is not simply an internal ability. It is closely linked to how individuals manage real-world demands such as planning, organisation, and self-regulation (Barkley, 2012; Zelazo et al., 2016).

This means that when a student struggles to concentrate or organise their work, the issue may not lie solely within the student, but also within the environment they are working in.

One of the key challenges for students with ADHD is managing cognitive load. Cognitive load refers to the amount of mental effort required to process information and complete tasks (Sweller, 1988). When cognitive load is too high, even capable students can become overwhelmed, leading to avoidance, inattention, or incomplete work.

Classrooms and study environments often unintentionally increase cognitive load. Multiple instructions given at once, unclear task expectations, noisy environments, and competing demands all place additional strain on executive function. For students already working at the edge of their cognitive capacity, these conditions can make it significantly harder to engage.

Reducing cognitive load is therefore one of the most effective ways to support students with executive function challenges. This can involve breaking tasks into smaller steps, providing clear and concise instructions, and reducing unnecessary distractions. Even small environmental adjustments can make a meaningful difference in a student’s ability to focus and complete work.

Structure is another critical element. Predictable routines and clearly defined expectations help reduce the mental effort required to navigate tasks. When students know what to expect and what is required of them, they can allocate more cognitive resources to the task itself rather than to figuring out what to do next (Best & Miller, 2010).

Research in education has consistently highlighted the importance of structured, well-designed learning environments. John Hattie’s synthesis of over 800 meta-analyses demonstrates that factors such as clear expectations, explicit instruction, and visible guidance from teachers have a significant impact on student learning (Hattie, 2009). For students with executive function challenges, these elements are particularly important, as they reduce ambiguity and support the cognitive processes required to engage with tasks.

This is especially relevant in senior secondary school, where students are expected to manage increasing levels of independence. While independence is an important goal, removing structure too quickly can leave some students without the support they need to succeed. For students with ADHD, independence often develops most effectively when it is built gradually, with ongoing scaffolding.

The concept of scaffolding, drawn from Vygotsky’s (1978) work on learning, highlights the importance of providing temporary support to help learners manage tasks that would otherwise be beyond their current ability. In practical terms, this might involve guiding students through the process of planning an assignment, modelling how to break tasks into steps, or providing check-ins at key points.

Another important consideration is the role of emotional regulation. Environments that feel overwhelming, unpredictable, or stressful can further impair executive function. Stress has been shown to significantly reduce the functioning of the prefrontal cortex, the area of the brain responsible for executive control (Arnsten, 2009). When students are anxious or dysregulated, their ability to plan, organise, and focus decreases.

This is why calm, predictable environments are so important. When students feel safe and supported, their cognitive capacity increases. They are better able to engage with tasks, manage their attention, and persist through challenges.

It is also important to recognise that strategies that work for one student may not work for another. ADHD is not a one-size-fits-all experience. Each student has a unique cognitive profile, and effective support often involves identifying the environmental conditions that best support that individual.

For some students, this may mean working in a quiet, low-stimulation environment. For others, it may involve structured check-ins, visual supports, or clearly segmented tasks. The key is to move away from a one-size-fits-all approach and toward a more responsive understanding of how environment shapes functioning.

When we shift our focus from trying to change the student to adjusting the environment, we often see meaningful improvements. Students who previously struggled to engage may begin to complete tasks more consistently. Focus improves. Frustration decreases.

This does not mean lowering expectations.

It means creating conditions in which students are better able to meet them.

Designing environments that support executive function is not about making things easier.

It is about making success more possible.

References

Arnsten, A. F. T. (2009). Stress signalling pathways that impair prefrontal cortex structure and function. Nature Reviews. Neuroscience, 10(6), 410–422. https://doi.org/10.1038/nrn2648

Barkley, R. A. (2012). Executive functions: What they are, how they work, and why they evolved. Guilford Press.

Best, J. R., & Miller, P. H. (2010). A Developmental Perspective on Executive Function. Child Development, 81(6), 1641. https://doi.org/10.1111/j.1467-8624.2010.01499.x

Hattie, J. (2009). Visible learning : a synthesis of over 800 meta-analyses relating to achievement. Routledge.

Sweller, J. (1988). Cognitive Load During Problem Solving: Effects on Learning. Cognitive Science, 12(2), 257–285. https://doi.org/10.1207/s15516709cog1202_4

Vygotskiĭ, L. S., & Cole, M. (1978). Mind in society : the development of higher psychological processes. Harvard University Press.

Zelazo, P. D., Blair, C. B., & Willoughby, M. T. (2016). Executive Function: Implications for Education. NCER 2017-2000. National Center for Education Research.