You Have a Private Diagnosis. Will Your School Recognise It?

What the Law Actually Says About Private Diagnoses

Schools have no legal basis to reject a private diagnosis. This is a crucial point because many parents are told by schools that they don't recognise private diagnoses or that they only work with NHS assessments. This is simply not correct.

The SEND Code of Practice makes clear that assessment should be needs-led, not diagnosis-led. What matters is your child's needs and what support they require. A diagnosis from a qualified, registered professional is evidence of those needs. Whether that diagnosis came from the NHS or from private practice is irrelevant in law.

If your child has been diagnosed with autism by a clinical psychologist or psychiatrist working independently, or with ADHD by a private paediatrician, that's a legitimate diagnosis. Schools cannot say they don't accept it. Local authorities cannot ignore it. What they can do, and sometimes will do, is question whether a particular diagnosis accurately reflects your child's needs or whether the provision they're offering is sufficient. But they cannot flatly reject the diagnosis itself.

Many local authorities do have a historical bias towards NHS diagnoses because they funded them, but the legal position is that this bias has no basis. The quality of the diagnosis matters. The credentials of the professional matter. Where it came from doesn't.

Private vs NHS Diagnosis: The Practical Difference

The difference between private and NHS assessments is usually about speed and depth, not validity. An NHS autism assessment through child and adolescent mental health services can take eighteen months or more depending on your region. A private assessment might take weeks. An NHS assessment is comprehensive and free. A private assessment costs money but gives you control over timing.

From a legal standpoint, both carry equal weight. A diagnosis is a diagnosis if it comes from a qualified professional following proper assessment protocols. What varies is the context. An NHS diagnosis comes with NHS support and will already be known to the local authority if they've been involved. A private diagnosis is on you to present and advocate with.

Some parents pursue private diagnosis specifically because they want to move faster. Their child is struggling, school is slow to refer through NHS channels, and they want answers and intervention now. This is a perfectly valid choice. What you'll then need to do is ensure your school understands and acts on that diagnosis. This usually means being proactive: sharing the report with the SENCo, explaining clearly what support your child needs, and if necessary, escalating to the local authority if the school doesn't cooperate.

When Local Authorities Resist (And Why They Shouldn't)

Some local authorities do resist private diagnoses, particularly in discussions about statutory support or EHCPs. They might say things like "we need our own assessment" or "we can't plan support based on private reports." This resistance isn't legally justified, but it does happen, and parents need to know how to respond.

When a local authority resists, the issue isn't usually the diagnosis itself but their interpretation of what it means for service provision. They might argue that the private assessment wasn't thorough enough, or that they need their own assessment to determine what statutory support is needed. These are different arguments to "we don't accept private diagnoses."

Your lever here is the Code of Practice. If you're pursuing an EHCP and the local authority is dismissing your private diagnosis, you can escalate by pointing out that the Code is needs-led, not diagnosis-led. If your child has been diagnosed and you have evidence of their needs, the local authority must properly consider whether an assessment is required. They can request their own assessment to inform their decision, but they cannot simply ignore what they've already been told.

Documentation is key. When a local authority says they don't accept your private diagnosis, ask them to put that in writing and explain their legal basis. Most won't do it because there isn't one. This often results in a shift in tone and a more cooperative approach.

Getting Your School On Board

Schools often need clearer guidance than local authorities do because they're on the front lines of supporting your child daily. A private diagnosis report can feel abstract if the school doesn't know how to translate it into classroom support.

Your job as a parent is to bridge that gap. Share the diagnosis report with the SENCo. Don't just hand them a document and hope they read it. Sit down with them and explain what the diagnosis means for your child's learning and behaviour. Highlight the specific recommendations from the professional. If the report suggests your child needs movement breaks, multisensory input, quiet space to regulate, or visual supports, explain how those would help in a school setting.

Many schools are genuinely relieved to have a diagnosis because it helps them understand why a child is struggling and what approach might help. Other schools are defensive because they worry a diagnosis signals a failure on their part. Acknowledge their effort, emphasise that diagnosis explains the underlying reason for difficulty, and work together on solutions.

If the school is resistant, you can escalate to the local authority. If your child has a diagnosis confirming significant need and the school isn't providing reasonable adjustments, that's a discrimination issue under the Equality Act. Most schools will cooperate once they understand this.

Moving Toward Statutory Support

If your child has a private diagnosis and you believe they need a statutory EHCP, a private diagnosis is a strong foundation for your case. You'll present it as evidence of your child's needs and argue that those needs exceed what school resources can meet.

The local authority may ask for their own assessment to confirm the diagnosis or to examine the child's needs in greater detail. This is their prerogative, but they shouldn't use it as a delaying tactic. You can request an EHCP assessment on the back of a private diagnosis alone, and the local authority must fairly consider it.

When you submit your request for assessment, include the private diagnosis report prominently. Explain how the child's needs are affecting learning and wellbeing. Provide evidence of what the school has already tried. Paint a clear picture of why the child needs specialist support. A private diagnosis helps frame your request because it gives the local authority a clear indication that there is an identified need worth investigating further.