How to Get School Absences Authorised When Your Child Has Anxiety — The Medical Letter That Actually Works

If your child can't attend school because of anxiety and the school is marking every absence as unauthorised despite a GP letter, the letter's content may not be enough on its own. A letter saying your child is "unfit to attend school due to anxiety" is evidence, but it does not itself determine the attendance code or create an exemption. The school records the absence code, and a medical letter does not guarantee that the absence will be authorised.

Here's what actually changes the code.

Why Your Current GP Letter Isn't Working

Most GP letters for school refusal follow a standard template:

To Whom It May Concern, [Child's name] is currently under my care for anxiety. They are unfit to attend school at this time. I recommend a period of rest and recovery. Yours faithfully, Dr [Name]

This letter records that your child is anxious and that a doctor thinks they shouldn't attend. The school still applies the attendance rules to each session, considering the reason for absence and any evidence available.

In England, the school records the attendance code. Code 'I' is for illness; Code 'O' is for unauthorised absence. DfE guidance says schools should not routinely request medical evidence: in most cases, a parent's notification that a child is too ill to attend can be accepted. Schools may request reasonable evidence where they have genuine and reasonable doubt about the illness or are dealing with a prolonged or repeated pattern. A medical letter is evidence for the school to consider; it does not automatically determine the code.

In the US, the situation varies by district. Some districts accept a doctor's note at face value. Others require specific documentation before granting a medical exemption from attendance. In Australia, medical certificates for school absence are standard, but extended absence requires more detailed clinical documentation. In every jurisdiction, the principle is the same: the more specific and actionable the letter, the more likely it is to change the administrative outcome.

Three Details That Can Help the School Assess the Absence

For a prolonged or repeated absence, a detailed clinical letter can help the school understand your child's health needs and possible adjustments. The DfE does not prescribe a three-part letter as a condition for Code 'I'. These three components can make the clinical information more specific:

1. A specific diagnosis or clinical formulation

Not "anxiety" — a named condition. Generalised Anxiety Disorder. Social Anxiety Disorder. Emotionally Based School Avoidance (EBSA). Autism Spectrum Condition with co-occurring anxiety. Panic disorder. Whatever the clinician has assessed or is assessing.

If your child hasn't been formally diagnosed yet (common — CAMHS non-crisis assessment waits can range from 12 to 36 months), the letter can state that the child is under clinical assessment and describe the presenting symptoms in clinical terms. "Under assessment for suspected Autism Spectrum Condition with severe anxiety presentation" is more actionable than "has anxiety."

2. An explicit statement that attending the physical school building poses a risk of harm

This is the element most letters miss. The school needs to understand why attending the physical school building is difficult, not just that the child would prefer not to attend. The difference between "unfit to attend" and "attending the physical school environment currently poses a significant risk of psychological harm, including worsening panic attacks, depressive episodes, and potential nervous system shutdown" is more specific clinical information for the school to consider.

The clinician doesn't need to diagnose school refusal as a condition — they can state, in their clinical opinion, whether attending in the current circumstances would harm the child's mental health. This gives the school more context when it considers how to record and support the absence.

3. Specific recommendations for educational adjustments

A letter that identifies the problem but offers no clinical recommendations may give the school little direction about support or adjustments. The school still decides how to record the absence, and a letter does not authorise indefinite absence. The letter can recommend specific, time-bound adjustments:

• A specific period of medical absence (e.g., "a minimum of 6 weeks of medical absence while clinical intervention is established")
• A reduced timetable for phased return when clinically appropriate
• A referral for medical homebound instruction (US) or hospital teaching (UK) if applicable
• An explicit statement that any return to school attendance should be guided by clinical advice, not administrative timelines

These recommendations give the school something to act on. They also create a documented clinical framework that makes it much harder to justify marking the absence as unauthorised.

How to Ask Your GP or Therapist

Most GPs and therapists want to help. They write vague letters because they don't know what the school's attendance system requires — medical training doesn't cover education law, and most clinicians have never seen the DfE's attendance guidance. When you explain what the letter needs to contain and why, most are willing to write a more specific letter.

The conversation doesn't need to be adversarial. Frame it as: "The school has specific requirements for authorising absence. Could the letter include [these elements]? Here's why each one matters."

If your GP isn't comfortable writing a detailed letter (some aren't — it takes time and they may feel they're overstepping), ask for a referral to the CAMHS team, a child psychiatrist, or a clinical psychologist who can provide a more comprehensive assessment letter. For prolonged or persistent absence, local authorities generally require evidence from a clinical specialist before commissioning Section 19 alternative education or adjusting EHCP provisions.

What Happens After the Letter

A well-written letter doesn't guarantee the school will change the code — but it gives the school clearer clinical information to consider. The school still records the code based on the reason for the absence and the evidence available. If the school marks the absence as unauthorised, ask for its reasons in writing and follow the school's complaints process if needed.

Document everything. Keep copies of the letter, the school's response, and any subsequent attendance records. If the school authorises the absences, those sessions do not count toward England's 10-session penalty-notice threshold, which is measured in a rolling 10-school-week window. If it doesn't, the documented trail of clinical evidence and school refusal can help explain the situation in any later review or formal withdrawal process.

When Authorised Absence Isn't Enough

Authorised absence is a holding pattern, not a solution. Authorised sessions do not count toward England's penalty-notice threshold, but this doesn't address what comes next. If your child's anxiety is so severe that they can't attend school for weeks or months, authorised absence can provide time to explore longer-term options: a reduced timetable, medical homebound instruction, a formal withdrawal to homeschool, or a therapeutic placement.

The School Refusal & Anxiety Withdrawal Blueprint covers the full spectrum — from fixing the medical letter to exploring intermediate pathways to formal withdrawal procedures across six jurisdictions. It includes a clinician letter request template with the exact elements described above, ready to hand to your GP.

Who This Is For

• Parents whose child's school absences are being marked as unauthorised despite a GP or therapist letter
• Families approaching the penalty notice threshold (10 unauthorised sessions in England, variable in other jurisdictions) who need to change the attendance code urgently
• Parents who want to keep their child enrolled at the school while the clinical situation is managed, rather than withdrawing immediately
• Anyone whose GP has written a generic letter and needs to understand what a more effective letter looks like

Who This Is NOT For

• Parents whose child's absences are already authorised — the system is working, no change needed
• Families who have already decided to formally withdraw to homeschool — you don't need to fix the attendance code if you're deregistering
• Parents dealing with truancy that isn't related to anxiety or mental health — this guidance is specific to school refusal driven by clinical distress
• Anyone looking for a way to keep their child home indefinitely without educational provision — authorised absence is a temporary measure, not a permanent arrangement

Frequently Asked Questions

Can the school override a doctor's letter?

The school records the absence code; a doctor's letter is evidence, not a legal override. DfE guidance says schools should not routinely request medical evidence, though they may request reasonable evidence where there is genuine doubt or a prolonged or repeated pattern. A detailed letter can help explain the clinical context, but there is no statutory three-part letter test.

What if my child doesn't have a formal diagnosis yet?

A letter can still be effective without a formal diagnosis. Ask the clinician to describe the presenting symptoms, state that the child is under assessment, and explain why attendance poses a risk of harm given those symptoms. "Under assessment for suspected Autism Spectrum Condition presenting with severe anxiety, daily panic attacks, and school avoidance behaviour that has resulted in three months of non-attendance" is clinically precise without requiring a completed diagnostic pathway.

Should I ask for the letter to be addressed to someone specific?

Address it to the headteacher by name. A letter addressed "To Whom It May Concern" feels generic. A letter addressed to the person who decides the attendance codes feels directed and harder to file away.

How long will authorised absence last?

That depends on the school and the clinical recommendation. Schools typically authorise absence for a defined period aligned with the clinical letter's recommendations. When that period ends, you'll need an updated letter or a different arrangement (reduced timetable, medical homebound, formal withdrawal). Build the renewal timeline into your planning — don't wait for the authorised period to expire before getting the next letter.

What if the school says they can't authorise absence for more than two weeks?

The DfE attendance guidance does not set a general two-week or four-week maximum. It says schools may request reasonable evidence for prolonged or repeated illness absences, but should not be rigid about the form of evidence. If the school says it applies a fixed limit, ask it to identify the rule and explain its decision in writing.