When Should You Keep Your Child Home From School? A Parent’s Guide to Fever, Vomiting & More

The hardest part of a school morning is sometimes not getting everyone dressed. It is standing in the kitchen at 7:15 with a child who says “I don’t feel good,” looking at the clock, and trying to work out whether this is a real sick day or a rough start that will pass by second period.

A runny nose can be nothing. A child who threw up once at 2am may be fine by breakfast, or may be at the start of a stomach bug. No single symptom answers the question on its own.

What follows is not a diagnostic guide, and it will not tell you what your child has. It is a decision framework: what public health guidance actually says, and how to apply it at 7am. It is part of our back-to-school guide for parents.

Start with one question, not the thermometer

Before you reach for anything, ask: can my child take part in a normal school day?

This is one of the core principles the American Academy of Pediatrics uses. A child who is too tired, too uncomfortable, or too unwell to join in — or who needs more care than school staff can reasonably give — may need a day at home even when their temperature is normal.

Picture the actual day rather than the symptom:

• Can they get dressed and out the door without a struggle?
• Can they eat and drink roughly normally?
• Can they sit through a lesson and concentrate?
• Can they manage the bathroom independently, as usual?
• Would the teacher or school nurse have to provide care beyond what is reasonable?

If the honest answer is no, the day at home is the right call — whatever the thermometer says.

Fever

Fever is the clearest single reason to pause. AAP guidance for school-age children is to keep a child home if they have had a fever above 101°F (38.3°C) within the past 24 hours.

But the number is not the whole story. A child with a fever who is unusually sleepy, weak, or miserable needs more attention than one who simply feels warm. Read the child alongside the thermometer.

For fever, your child should be fever-free without fever-reducing medicine for at least 24 hours before returning to school. Medicating a fever and sending them in usually just means a phone call from the office by lunchtime.

Vomiting and diarrhea

AAP groups these together: episodes of vomiting or diarrhea within the past 24 hours are a reason to stay home.

Beyond the rule, there is a practical test. After vomiting, a child is ready when they can keep fluids and food down. With diarrhea, the question is whether they can manage a school day without frequent urgent bathroom trips or the worry of an accident — which is its own reason to stay home, quite apart from contagion.

These stop being attendance questions and become medical ones if your child cannot keep fluids down, is unusually sleepy or weak, has significant abdominal pain, shows signs of dehydration, or has blood in vomit or stool. Call your pediatrician.

Cough, congestion and runny nose

This is where most unnecessary absences happen. A cough can linger for two weeks after a child has otherwise recovered, and waiting for zero symptoms means waiting a long time.

CDC guidance for respiratory viruses sets a clear return rule: go back to normal activities when, for at least 24 hours, symptoms are improving overall and any fever has gone without fever-reducing medication. Both conditions, both for that 24-hour window.

After returning, the CDC recommends added precautions for the next five days — careful hand hygiene, better ventilation, keeping some distance from people at higher risk, and masking where that is practical.

So the question is not “does my child still have a cough?” It is “is my child getting better, and well enough to take part?”

Be more cautious when respiratory symptoms are getting worse rather than better, come with fever, make breathing difficult, or leave your child unusually tired.

Sore throat

A sore throat on its own is not a reliable signal in either direction, and it is not something to sort out at home. The reason matters: most sore throats are viral, but strep throat is bacterial and has its own return rule — and the two cannot be told apart by looking.

A sore throat with fever, difficulty swallowing, or significant pain needs evaluation rather than a judgement call in the kitchen. A swab is what settles it.

If strep is confirmed and treated, the CDC advises staying home until the child has been on appropriate antibiotics for at least 24 hours, and they should also be fever-free and well enough to take part. Worth knowing: recent AAP Red Book guidance has moved to 12 hours of treatment for a well-appearing child, but many schools have not updated their policies. Follow your school’s rule and the advice of the clinician who prescribed the antibiotics — and finish the full course regardless of when your child goes back.

Rash

Context decides this one. A mild rash with no fever and no change in how your child is behaving does not automatically mean a day at home. A new rash alongside fever, illness, or rapid spreading deserves a phone call before school.

Contact your child’s healthcare provider if a rash comes with fever, unusual sleepiness, significant pain, breathing difficulty, or swelling — or if you simply do not know what it is.

Seek urgent care for a rapidly spreading rash of small red or purple spots that look like pinpricks or bruises, particularly with fever. That is not a school-attendance question.

Head lice are a different situation

Head lice cause a great deal of panic but do not belong in the “sick child” category at all — they do not transmit disease. A child with head lice generally does not need to be sent home mid-day: current guidance supports finishing the school day, starting treatment at home, and returning.

Because it works so differently, we cover it separately in head lice at school: what parents need to know, check and do — including how to check properly, what confirms an infestation, treatment, cleaning, and the “no-nit” question.

When staying home probably isn’t necessary

Keeping a child home for every minor symptom adds up to a lot of lost school days. AAP guidance is explicit that if none of the three main conditions apply, a child who wakes with minor problems such as a runny nose or a slight headache can generally go in — subject to local policy.

That typically covers a mild runny nose, a lingering cough that is improving, mild congestion, or a rash without fever or behaviour change.

The goal is not zero symptoms. It is a child well enough to be there without putting classmates or staff at unnecessary risk. If you do send them in, make sure the school has a number that reaches you during the day.

When it happens every school morning

There is one pattern worth separating from illness entirely.

If stomachaches, headaches, or nausea appear before school on most mornings and ease on weekends and holidays, the cause may not be an infection. Anxiety produces genuinely physical symptoms — the stomachache is real, even when there is no bug behind it.

Repeated sick days can quietly make this worse, because avoidance tends to reinforce the anxiety. If you notice the pattern, talk with your child, and speak to your pediatrician to rule out physical causes. Our guide to back-to-school anxiety in kids covers the wider signs.

Know your school’s policy before you need it

National guidance is a framework; your school sets the actual rule, and it may be stricter. Find out at the start of the year, not at 7am on a Tuesday:

• What temperature requires staying home, and how long fever-free before returning?
• What is the rule after vomiting or diarrhea?
• What is required for specific contagious illnesses, including strep?
• Who do you contact if your child becomes ill during the day?
• Is there a school nurse, and when?

The 7am checklist

1. Fever above 101°F in the past 24 hours? Stay home.
2. Vomiting or diarrhea in the past 24 hours? Stay home.
3. Too unwell for a normal school day? Stay home.
4. Symptoms getting worse rather than better? Stay home.
5. None of the above, and symptoms mild and improving? School is usually reasonable.
6. Unsure, or symptoms unusual or severe? Call the pediatrician.
7. Whatever you decide, check it against the school’s policy.

You do not need to identify the illness to make the school decision. You only need to judge whether your child is well enough to be there, and whether being there is fair to everyone else in the room.

When to call your pediatrician

Some symptoms are past the point of an attendance decision. Contact your child’s pediatrician for:

• Difficulty breathing, or unusual sleepiness and difficulty waking
• Severe or worsening pain, or a stiff neck with fever
• Repeated vomiting, inability to keep fluids down, or signs of dehydration
• A rash you cannot identify, or one spreading rapidly
• A sore throat with fever or difficulty swallowing
• Eye redness with discharge, which needs assessment before a return-to-school decision
• Fever that keeps returning, or symptoms getting worse rather than better

Seek urgent care for significant breathing difficulty, severe weakness, inability to stay awake, or a child who simply looks seriously unwell.

Frequently asked questions

What temperature means my child should stay home?

AAP guidance for school-age children is to keep a child home if they have had a fever above 101°F (38.3°C) within the past 24 hours. They should be fever-free without fever-reducing medication before returning. Your school may apply a lower threshold, so check its policy.

Can my child go to school with a runny nose?

Usually yes. AAP guidance is that a child with minor symptoms such as a runny nose or slight headache can generally attend if they have no fever, no vomiting or diarrhea in the past 24 hours, and are well enough to take part — subject to local attendance policy.

How long should a child stay home after vomiting?

AAP guidance lists vomiting within the past 24 hours as a reason to stay home. Beyond that window, the practical test is whether your child can keep fluids and food down and feels well enough to take part in a normal day.

When can my child return after a cold or flu?

CDC guidance for respiratory viruses is to return to normal activities when, for at least 24 hours, symptoms are improving overall and any fever has gone without fever-reducing medication. The CDC also advises added precautions for the following five days, such as hand hygiene, ventilation and masking where practical.

When can a child go back to school after strep throat?

The CDC advises staying home until the child has been on appropriate antibiotics for at least 24 hours, and they should also be fever-free and well enough to participate. Recent AAP Red Book guidance has moved to 12 hours for a well-appearing child, but many schools still require 24, so follow your school’s policy and your clinician’s advice. Finish the full course of antibiotics either way.

My child has head lice. Do they have to go home?

Generally not. Head lice do not transmit disease, and current guidance supports a child finishing the school day, starting treatment at home, and returning. Our head lice guide covers checking, treatment and school policies in detail.

My child says they feel sick every school morning. What should I do?

If stomachaches or headaches appear on school mornings and ease at weekends and during holidays, anxiety may be part of the picture — and those symptoms are genuinely physical, not imagined. Talk with your child, and see your pediatrician to rule out physical causes before assuming it is one or the other.

Sources

• American Academy of Pediatrics, HealthyChildren.org — When to Keep Your Child Home Sick from School.
• American Academy of Pediatrics, HealthyChildren.org — When to Keep Your Child Home from Child Care.
• Centers for Disease Control and Prevention — Respiratory Virus Guidance (unified guidance for COVID-19, influenza and RSV).
• Centers for Disease Control and Prevention — guidance on group A strep and return to school.
• American Academy of Pediatrics — Red Book, guidance on group A streptococcal infections and school exclusion.