Masking and Identification: Why UK Rates Stay Low Despite Rising Awareness

Awareness of masking is growing, yet formal identification lags behind. We look at what the evidence shows about why masked needs, especially in girls, so often stay invisible at school, and what parents can do.

There is a stark contrast between public conversation and official data. While awareness of autism masking grows, the Department for Education (January 2025 census, published June 2025) records that around one in five pupils in England (19.6%) are identified with special educational needs, of whom autism is one part. Autism is, in fact, the most common primary need among pupils with an Education, Health and Care (EHC) plan, at 33.6%. Many children, particularly those who mask, are recognised late or not at all. Plain-language definitions of the terms used here are in our glossary.

That gap between lived experience and formal recognition is well documented. A population study in The Lancet Regional Health, Europe (O'Nions and colleagues, 2023) estimated that a large share of autistic people in England, especially adults, remain undiagnosed, with under-diagnosis greatest in older age groups. For families, the practical question is what to do during the long wait for assessment.

The masking phenomenon in schools

Masking, sometimes called camouflaging, is when an autistic person hides or compensates for autistic traits in order to fit in. The National Autistic Society notes that masking can delay or prevent diagnosis, and peer-reviewed research links higher camouflaging to a later age at diagnosis, particularly in girls and women (Milner and colleagues, 2023). Children who mask effectively often go unnoticed precisely because their coping strategies work so well: they present as compliant, quiet or academically capable while managing considerable sensory, social and executive-function load.

Some parents describe what is popularly called "after-school restraint collapse", a term coined by the psychotherapist Andrea Loewen Nair for children who hold themselves together at school and then release built-up stress once home. It is a widely used parenting and practitioner term rather than a formal clinical diagnosis, but it captures a pattern many families recognise: a child who appears fine at school yet struggles with homework, transitions or evenings.

Why girls are missed

Identification is markedly skewed by sex. According to the Children's Commissioner for England (2024), boys make up around 70% of neurodevelopmental diagnoses in community health services, and girls account for just 29% of autism diagnoses. Yet the underlying condition is far more evenly distributed than those figures suggest: a 2017 meta-analysis of 54 studies (Loomes, Hull and Mandy) found that while diagnosis rates show roughly four boys to every girl, the true ratio among children who meet the criteria is closer to three to one, pointing to a diagnostic bias that misses many girls. Part of the explanation is historical: autism was first described mainly in boys, and the standard assessment tools were validated largely on male samples without sex-based norms (D'Mello and colleagues, 2023), so the criteria are better at recognising a typically male presentation.

Who else gets missed, and why

The identification gap follows predictable patterns. DfE school-census data shows Asian pupils make up about 14% of the school population in England, yet the Children's Commissioner (2024) found they account for only around 1% of ADHD diagnoses in community health services. Research using the Born in Bradford data found girls of Pakistani heritage were 11 times less likely to receive an autism diagnosis than White British boys (N8 Research Partnership, 2024), and an analysis of seven million pupils found autism identification varied widely by ethnicity (Roman-Urrestarazu and colleagues, 2021).

These disparities reflect several barriers at once: differences in how neurodivergent traits are interpreted across communities, unequal access to assessment, and criteria developed from a narrow evidence base. Where a child's presentation does not match the expected pattern, needs can stay invisible for years.

Family circumstances matter too. UK research has found children of more highly educated mothers were around twice as likely to have an autism diagnosis recorded (Kelly and colleagues, 2019), and children in more affluent areas are somewhat more likely to be identified (LSE, 2023), although findings on deprivation are mixed.

The assessment bottleneck

Even when masking is recognised and a referral is made, the system struggles to keep pace. The Children's Commissioner (2024) estimated that around 400,000 children in England, roughly 3% of all children, were waiting at the end of 2022-23 for a first appointment for a suspected neurodevelopmental condition, with many waiting years. The N8 "Child of the North" report (2024) found that only about 4.5% of under-18s referred for autism received an appointment within the recommended 13 weeks.

This creates a two-tier system. Private autism assessments are commonly reported to cost from around £1,800 to over £3,500 (provider guidance summarised by CADS Autism), with reduced-cost options of a few hundred pounds available from some charities for eligible families. Families with resources can get answers in months; others wait years, or never get a formal answer at all. Throughout that wait, children continue attending school every day, often without tailored support.

Support before a diagnosis

A growing body of opinion, from the Children's Commissioner to autism researchers, holds that support should not wait for a diagnosis. When teachers and parents understand how masking presents, the child who appears fine but struggles with transitions, who completes the work but is visibly exhausted, who excels academically yet finds friendships hard, they can put helpful adjustments in place straight away.

This matters because much of the harm associated with unrecognised neurodivergence comes not from the difference itself but from years of struggling without understanding why. A child who processes instructions more slowly than classmates, but does not know they are autistic, may not think "I process differently"; they may simply conclude "I'm slow." Early recognition and everyday support can stop that belief taking hold. Our guides on how educators identify struggling students early and how schools identify learning difficulties look at this from the classroom side, where teachers and SENCOs can use Qwixl:Homework to make class-level patterns easier to see.

What parents can do

If you think your child might be masking, document patterns rather than isolated incidents: the contrast between school and home behaviour, energy levels after school, specific triggers, and any gap between ability and performance. Our guides on how parents can support schools in identifying needs and advocating for school support set out practical next steps.

Engage with school as a partner. Share what you see at home that may not be visible in class, and ask teachers to look beyond compliance to whether your child is working harder than peers to achieve the same result. Signs worth noting include appearing socially capable but reporting friendship difficulties, achieving well but showing extreme fatigue, following rules closely but struggling with unexpected change, or seeming fine at school but having frequent meltdowns at home.

Moving forward

The gap between rising awareness of masking and low identification rates reflects systemic challenges that will not be solved overnight. But schools and families can act now. When educators understand that compliance does not equal comfort, and when parents feel able to seek support before a diagnosis, more children get help sooner.

This is the gap that early, everyday insight can help to fill. It is not a diagnosis, which must remain with qualified professionals, but a way to understand how a child approaches their work. Qwixl:Milo works inside Google Docs and observes writing and typing patterns over time, surfacing screening-level indicators (screening signals, not diagnoses) that can help a family build understanding and evidence while they wait. For the wider picture of unmet need, see our guide to undiagnosed SEN in UK schools.

Sources and further reading

Support that doesn't wait for a diagnosis

Milo is a Chrome extension that works inside Google Docs. It learns from how your child writes (typing patterns, pauses, corrections) and surfaces early indicators that may be worth exploring further, alongside adaptive writing support. No referral. No waiting list. No assessment fee.

Try Milo For parents