HSC Illness and Misadventure: The Evidence and the Deadline
Being sick on the morning of an HSC exam, or having something go badly wrong on the way there, is one of the worst feelings of Year 12. NESA has a process for exactly this, called illness and misadventure. It can't fix the day, but it can protect your mark.
This guide covers NESA's process for the 2026 HSC written exams (Tuesday 13 October to Thursday 5 November). School assessment tasks have a separate process, explained near the end.
The short version
- Sit the exam if it's safe to.
- Tell the presiding officer (the person in charge of the exam room) when you arrive, or straight away if something happens during the exam.
- Get independent evidence the same day, immediately before or after the exam. For illness, that means a doctor.
- Get your application to your principal within days, not weeks.
- Check Students Online on results day for the decision.
What counts as illness or misadventure
NESA's process is for something that:
- happened immediately before or during an HSC exam
- was unexpected
- was beyond your control, and
- either stopped you attending or affected your performance in the exam.
Illness is the obvious one: waking up with gastro, or (NESA's own examples) an asthma attack or a bleeding nose during the exam. Misadventure covers other unexpected events that knock you off course, like a car accident on the way to the exam centre.
Get evidence for each exam that's affected, on the day of each one. NESA says to submit a separate application and evidence for each affected exam or exam component, so if more than one is hit, ask your school how to lodge them.
What it doesn't cover
This is where students get caught out. NESA's 2026 Rules and Procedures guide says the process doesn't cover:
- difficulty preparing, or lost study time before the exams
- the wrong exam equipment, or equipment that fails (including a device that isn't fully charged for an online exam)
- not knowing the exam content, or complaints about how a course was taught
- misreading the exam timetable or the instructions, or sitting the wrong exam
- a long-term illness, unless you have a flare-up during the exam period
- a condition you already have exam provisions for (unless further unexpected difficulties come up), or a condition you should have applied for provisions for
- courses you're doing as a self-tuition student
- other commitments, like work, a family holiday, sport, entertainment or another organisation's exams.
If you misread the timetable and miss an exam, contact your principal immediately anyway. For a course with only one exam, your principal writes to NESA to explain. If NESA accepts the reason, you get zero for the exam but keep the course and your assessment mark. For a course with more than one exam component, like English with its two papers, you keep the course if you complete the other components and get zero for the one you missed.
If you're injured before the exams, say with a broken arm, that's usually a matter for HSC exam provisions rather than illness and misadventure. NESA lists a broken arm as an example of a temporary condition that provisions can cover. Talk to your school straight away.
Step 1: Sit the exam if you safely can
NESA expects you to attend your exams unless it's unsafe or against specific medical advice. There's a strong practical reason to go if you can:
- If you sit the exam and your application is upheld, you get whichever is higher: the mark you actually earned, or a calculated mark. Sitting it doesn't put your mark at risk.
- If you miss the exam and your application is declined, you get no marks for that exam. For a course with only one exam, that means no result in the course at all, which could affect your eligibility for the HSC or an ATAR.
That doesn't mean dragging yourself in when a doctor has told you not to, or travelling through a flood or bushfire. NESA is clear that you shouldn't put yourself in danger to get to an exam. If you can't go, contact your school immediately. The school will give you the application form to complete and sign.
Running late? Contact your principal, get to the exam centre as soon as you safely can, and follow the instructions of the presiding officer or your principal afterwards. You can still enter more than an hour after the start, but you'll need to explain why NESA should accept your responses for marking.
Step 2: Tell the presiding officer
- Unwell before the exam but still attending? Tell the presiding officer when you arrive that you're sick and will be applying for illness or misadventure.
- Something happens during the exam? Tell the presiding officer straight away.
This matters more than it sounds. If you attended, part of the application is a presiding officer's report recording anything the supervisors noticed. If nobody in the room knew you were unwell, there's nothing to report. You can also pick up the application form at the exam.
Step 3: Get independent evidence the same day
NESA requires independent evidence obtained on the same day, either immediately before or after each exam you're applying for. It has to be current and specific to the date and time of that exam.
For illness, a doctor completes the medical section of NESA's form. It needs to describe the illness, what the doctor observed, when it started and how it may have affected your performance in the exam. A medical certificate that just says you were unfit for work or study won't be accepted.
For misadventure, the evidence needs to give the details of what happened, with the date and time. NESA gives police statements and statutory declarations as examples.
A few practical points:
- Book the doctor for straight after the exam if you're unwell that morning. Evidence from the next day doesn't meet the same-day rule.
- Take NESA's form with you if you have it. If you don't, see the doctor on the day anyway and sort out the paperwork with your school.
- You cover the cost of getting the evidence, such as the doctor's appointment.
- Write your own statement while it's fresh. The application includes a statement from you about how you were affected during the exam, plus a signed declaration. Be specific: what you felt, when it started, which parts of the paper it affected.
Step 4: Apply through your school, quickly
You don't send the application to NESA yourself. You complete your sections, attach the evidence and give it to your principal, and the school lodges it with NESA.
The timing is tight. Under NESA's rules, you need to get your application to your principal within 5 business days after the affected exam, or within 3 business days after the HSC exam period finishes if that comes sooner. NESA only considers late applications in exceptional circumstances, and your school may set an earlier internal date, so ask on the day.
Two more things worth knowing:
- Your school can't talk you out of it. NESA's rules say principals must give you the forms when you ask, explain how the process works and not discourage you from applying.
- If you're too unwell to do it yourself, a parent or guardian can submit the application on your behalf.
You'll get an acknowledgement letter in Students Online once it's in. Keep it.
How NESA decides, and what you can receive
A panel reviews your application, your evidence and the statements from the presiding officer and your principal, then upholds (approves) or declines it. If it's upheld, here's how your exam mark is worked out:
| Your situation | If upheld, you receive |
|---|---|
| One-exam course, missed the exam | Your moderated school assessment mark |
| One-exam course, sat the exam | The higher of your exam mark or your moderated school assessment mark |
| Course with more than one exam, missed or affected in some of them | The higher of your exam mark or a calculated mark (from your moderated school assessment mark or your unaffected exams) |
| Course with more than one exam, sat them all but affected in all | The higher of your exam mark or your moderated school assessment mark |
| Course with more than one exam, missed all of them | Your moderated school assessment mark |
| Optional exam (VET, English Studies, Maths Standard 1) | A moderated estimate from your school if you missed it, or the higher of that estimate and your exam mark if you sat it |
"Moderated" means NESA has adjusted your school assessment marks onto the same scale as your school group's exam marks, keeping your rank order the same.
The key point: an upheld application can't lower your mark. You always get the higher option. If your application is declined, you keep the mark you earned in the exam, or no marks for an exam you missed.
The decision letter arrives in Students Online on the same day as your HSC results, which is Wednesday 16 December 2026. If your application is declined, you can appeal, but an appeal needs your reasons and new evidence. Ask your school how to lodge it.
What it can't change
Know its limits, so you're not counting on something that isn't there:
- It isn't a resit. NESA's process works by calculating a mark, not by giving you another go at the paper.
- It won't add bonus marks. The best outcome is a calculated mark that's higher than the one you earned.
- It won't cover a bad day that wasn't illness or misadventure. A tough paper or a blank on one question isn't covered. If an exam just went badly, read how to recover from a bad HSC exam and turn to the next one.
- It doesn't touch your school assessment marks or your rank. Those come from your school.
School assessment tasks are a different process
Your Year 12 assessment tasks, the tests, assignments and school exams in your assessment schedule, are run by your school, not NESA. For most courses with HSC exams, school-based assessment makes up 50% of your HSC mark, so this process matters just as much.
| HSC exams | School assessment tasks | |
|---|---|---|
| Who runs it | NESA | Your school |
| Where the rules are | NESA's HSC Rules and Procedures guide | Your school's assessment policy |
| How you apply | Form and evidence to your principal; the school lodges it with NESA | Your school's own form, evidence rules and deadline |
| If upheld | The higher of your exam mark or a calculated mark | Usually an extension or a substitute task; an estimate only in exceptional cases |
| If declined | You keep the mark you earned, or nothing for a missed exam | Zero for a task you missed or didn't submit |
NESA requires your school to give you its illness and misadventure procedures in writing at the start of your HSC courses, often in an assessment booklet or handbook. Read that section before you ever need it, because the deadlines can be short. If you want to challenge the mark for a single task, that's your school's process too. NESA doesn't hear appeals about individual task marks.
Look after yourself, too
Nerves aren't illness or misadventure, but they're still worth dealing with. How to manage HSC exam stress has practical steps, and your school counsellor, year adviser or GP can help. Kids Helpline (1800 55 1800) is free and open 24/7.
Parents: the most useful thing you can do on a bad morning is handle the logistics. Call the school, book a doctor for straight after the exam and keep copies of everything.
The bottom line
If you're sick or something goes wrong around an HSC exam, sit it if it's safe, tell the presiding officer, get independent evidence the same day and get your application to your principal within days. An upheld application gives you the higher of your earned mark or a calculated mark, so it can't count against you. School assessment tasks run on your school's own process, so find that policy now, while you don't need it.
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Frequently Asked Questions
What is illness and misadventure in the HSC?
It's NESA's process for students who, immediately before or during an HSC exam, get sick, have an accident or suffer some other unexpected event beyond their control that stops them attending or affects their performance. If NESA upholds the application, you receive the higher of your exam mark or a mark calculated from other evidence, such as your moderated school assessment mark.
Should I still sit an HSC exam if I'm sick?
Yes, if it's safe and not against medical advice. NESA expects students to attend. If you sit the exam and your application is upheld, you get the higher of your actual mark or a calculated mark. If you miss the exam and your application is declined, you get no marks for it, and for a course with only one exam that means no result in the course.
How long do I have to apply for HSC illness or misadventure?
Not long. NESA's rules say students should get the application to their principal within 5 business days after the affected exam, or within 3 business days after the HSC exam period ends if that comes first. Your school then lodges it with NESA. Your school may set an earlier internal deadline, so ask on the day.
What evidence do I need for an illness and misadventure application?
Independent evidence from the same day, obtained immediately before or after each affected exam. For illness, a doctor completes the medical section of NESA's form, describing the illness, what they observed and how it may have affected your performance. A certificate that only says you were unfit for work or study isn't accepted. For misadventure, evidence such as a police statement or statutory declaration with the details, date and time.
Can an illness and misadventure application lower my HSC mark?
No. If it's upheld, you receive whichever is higher: the mark you earned or the calculated mark. If it's declined, you keep the mark you earned in the exam. The only way to end up with nothing is to miss an exam and have the application declined.
Is illness and misadventure for school assessment tasks the same process?
No. School assessment tasks are handled by your school under its own assessment policy, with its own forms and deadlines. If your school upholds a claim, you'll usually get an extension or a substitute task. NESA's process covers only the HSC exams.