ACEs In Schools: Evidence, Limits And How To Use ACE Awareness Well
What Are Adverse Childhood Experiences?
Adverse Childhood Experiences (ACEs) are potentially traumatic events that occur before the age of 18 and can have a profound impact on a child's development, health, and life outcomes. The original CDC-Kaiser ACE study (1995–1997) identified ten categories of childhood adversity across two domains: household dysfunction and abuse/neglect.
Nearly half of all children in the UK have been exposed to at least one ACE. Around one in ten have experienced four or more — and the evidence shows that the greater the number of ACEs, the greater the risk of a wide range of negative health and social outcomes in adulthood.
The Ten ACE Categories
🤕 Physical abuse
💔 Emotional abuse
⚠️Sexual abuse
🏠Physical neglect
😶Emotional neglect
🍺Household substance abuse
🧠Household mental illness
👊Domestic violence
🔒Incarcerated family member
💔Parental separation/divorce
ACEs are not destiny. The relationship between ACEs and outcomes is probabilistic, not deterministic. Protective factors — particularly stable, supportive relationships — can powerfully mitigate even high ACE scores.
What the Evidence Actually Says
The evidence base for ACEs is substantial — but it is also more nuanced than it is often presented in school training. Key findings include:
High ACE scores are associated with significantly increased risk of poor physical and mental health outcomes across the life course
The relationship is correlational, not causal — ACEs increase risk, they do not determine outcome
Resilience is real: many children with high ACE scores develop into healthy, thriving adults, particularly where protective relationships exist
Schools themselves can be a powerful protective factor — a safe, predictable, relational environment directly buffers the impact of adversity
Common Pitfalls in Schools
ACE awareness has transformed the conversation about behaviour in many schools — but poorly applied, it creates its own problems.
Pitfall 1: Using ACEs to excuse rather than understand behaviour
Understanding that a pupil's behaviour is rooted in trauma is not the same as accepting that behaviour without boundaries. Trauma-informed practice still holds clear, consistent expectations — it just enforces them with empathy rather than punishment.
Pitfall 2: Labelling pupils based on assumed ACE history
Schools do not have access to ACE scores and should not attempt to construct them. The risk is that staff begin to see certain pupils through a deficit lens — "this child has ACEs" — rather than as individuals with strengths and resilience.
Pitfall 3: Trauma-informed as a programme rather than a culture
A single training day on ACEs does not make a school trauma-informed. The evidence points to whole-school cultural change — consistent relationships, regulated staff, and safe environments — not a new programme on top of existing practice.
A Practical Route to Trauma-Aware Practice
Rather than focusing on individual ACE scores, effective trauma-aware schools build the conditions that serve all children — particularly those who have experienced adversity:
Predictability: Clear routines, consistent expectations, and reliable relationships reduce the threat response in children who have learned the world is unsafe
Attunement: Staff who notice and respond to emotional states — not just behaviour — build the relational safety that enables learning
Co-regulation before self-regulation: Children cannot regulate their own emotions until they have experienced being co-regulated by a calm, reliable adult
Behaviour as communication: Asking "what happened to this child?" rather than "what is wrong with this child?" fundamentally reframes the response
How Teach+ Addresses ACEs
Module 1 (Understanding SEMH and Trauma) and Module 2 (Supporting SEMH Needs Through a Trauma-Informed Approach) of the Teach+ Positive Intervention course provide staff with a thorough grounding in ACEs, the neuroscience of trauma, and practical strategies for creating trauma-aware classroom environments.
Our Trauma Informed Practice course goes deeper still — building a whole-school cultural shift that equips every member of staff with the knowledge and skills to support children affected by adversity.
