SCHOOL ATTENDANCE 🧵

Are you a headteacher losing sleep over how to improve your pupil attendance rates?

If so, THIS 👇🏻 is the most important chart you need to see.

This chart holds the answer to your problem.

And, even better, it’s a fixable problem.

Read on… 🧵 Image
Pupil absences due to illness alone have increased from a pre-pandemic average of 2.6% up to 3.9%.

That’s a 50% rise!

The pandemic has been going on so long, it seems we’ve forgotten what it was like before.

Children never used to be off school sick nearly as much as this. Image
Now let’s look specifically at this time last year: last Autumn term 2022/23.

This is when our kids were hit hardest.

By the end of that term, absences purely due to illness were even higher than they’d been the year before when the first Omicron wave had just hit full force. Image
If you’re wondering what impact this illness absence had on overall absence rates, here it is 👇🏻

The charts at the top show *overall* pupil absence rates week-by-week.

The charts at the bottom are the ones we were looking at before: absences *purely due to illness*. Image
In the last week of Autumn term 2022/23, absences soared to:

𝙋𝙧𝙞𝙢𝙖𝙧𝙮
📍overall absence rate: 9.6%
📍illness absence rate: 7.1%
➡️74% of absences due to illness

𝙎𝙚𝙘𝙤𝙣𝙙𝙖𝙧𝙮
📍overall absence rate: 13.1%
📍illness absence rate: 7.8%
➡️60% of absences due to illness Image
If we average it out over the *whole* of last Autumn term:

𝙋𝙧𝙞𝙢𝙖𝙧𝙮:
📍overall absence rate: 6.0%
📍illness absence rate: 3.8%
➡️63% of absences due to illness

𝙎𝙚𝙘𝙤𝙣𝙙𝙖𝙧𝙮:
📍overall absence rate: 8.6%
📍illness absence rate: 4.4%
➡️51% of absences due to illness Image
Of course, pupil attendance is a complex issue & there are many underlying contributors.

The following have all been cited as key drivers:
📍increased truancy
📍an increase in child mental health problems
📍cost of living crisis
📍loss of routine during school closures.
Yes, these do all play a part in the bigger picture. But this narrative completely fails to address the elephant in the room…
 
The primary driver of the high rates of pupil absence is ILLNESS.
 
It’s right there in black & white on the government website… Image
And if we look back at the UKHSA data, we can see exactly what was happening last Autumn Term…

That’s when the UK was hit hard by the triple whammy of Covid, flu & RSV all circulating at very high levels simultaneously.

Scarlet fever, norovirus & measles also took their toll. Image
But there was such an obsession with improving absence rates at all costs that the basics of infection control were just abandoned.

Children were told that they need to ‘show resilience & drag themselves into school’ even if they were unwell.

And so the illnesses spread. Image
This year, it looks like we’re set to make the same mistakes all over again.

There’s a huge push towards a totally unrealistic 100% attendance target.

But forcing sick kids to come to school is totally counter-intuitive.

It only makes things WORSE by spreading the germs. Image
To make matters worse, we’re starting this Autumn term with Covid rates even HIGHER than they were this time last year…

…and the year before…

…and the year before that!

In fact, it’s currently worse than it was during any of the 3 national lockdowns. Image
The latest government guidance doesn’t exactly help either.

If your child has symptoms of Covid (a runny nose, sore throat or cough), feel free to send them in to school anyway!

There’s no recognition of the fact that this will just start countless new chains of transmission. Image
Instead of just one child being ill at home, you end up with the entire class being off sick… and probably the teacher too!

In the US, schools went back a few weeks ago and already multiple schools have had to close down due to Covid. There are no teachers left to teach! Image
Talking of teachers…

Last Autumn term (2022/23), staff sickness absence MORE THAN DOUBLED across the UK compared to the pre-pandemic Autumn term 2019.

Absences specifically due to colds, flu & other (unnamed!) viruses were 7 TIMES HIGHER in Autumn 2022 vs Autumn 2019. Image
At my kids’ school, term only started a few days ago but I already know of 3 teachers who are in teaching with a sore throat & hoarse voice… despite the fact they can barely speak!

These are two of the top 10 symptoms of Covid, but I doubt they’ve taken a Covid test. Image
I just hope they don’t end up developing Long Covid…

Teaching already has one of the highest rates of Long Covid of any profession.

DfE research also shows that a third of secondary schools & a quarter of primary schools have reported workforce challenges due to Long Covid.
Image
In my very first post in this thread, I promised you that this was a fixable problem.

And it is. To some degree, at least.

The answer is to CLEAN THE AIR!

There’s now a mountain of evidence about how cleaning the air can massively reduce the spread of Covid and other viruses.
Opening the windows or turning existing mechanical ventilation systems up to full blast is one way to clean the air.

This lets stale, virus-laden indoor air OUT & brings fresh outdoor air IN.

Ventilation delivering 6 air changes per hour can reduce the spread of Covid by >82%!
But it isn’t always possible or practical to keep windows fully open…

📍some may be sealed shut;

📍outdoor air may be heavily polluted if near a busy road;

📍in Winter, it may be too cold;

📍and in Summer, it can aggravate hayfever symptoms.
Luckily we have another tool in our toolkit:

💨 HEPA air filters! 💨

HEPA filters don’t replace the air in a room with ‘new’ air. Instead, they clean the air already in the room, filtering out viruses & other harmful contaminants.

They can HUGELY reduce the spread of illness.
This Swiss study examined the effectiveness of air filters at reducing Covid transmission in a typical classroom:

Even with windows CLOSED, air filters with a clean air delivery rate of 800m3/h led to a 5-fold decrease in the viral dose that pupils are exposed to.
Image
Now just imagine how much we’d reduce the spread of illness (and, in turn, reduce the number of pupil absences) if there was an air filter in every classroom.

Why are we even talking about it?

Why aren’t we just *doing* it?

chemistryworld.com/features/can-w…
If the DfE were serious about wanting to reduce pupil (and staff) absence rates, the very FIRST thing they should be doing is tackling the spread of illness…

…by installing air filters and telling sick kids to stay at home.

In the meantime, it’s each school for themselves.
Yes, there’s an upfront capital cost…

But, in the long run, you could actually SAVE money.

3.2m teaching days were missed in 2021/22 due to staff illness.

That led to a £622m bill on supply teacher costs, equivalent to £171 per pupil.

That could buy a LOT of air filters. Image
Are you convinced that air filters are worth investing in yet?

If so, a final word of warning…

Please DON’T buy one of the filter models on the DfE air cleaner marketplace.

These are not fit for purpose for classrooms and there are plenty of better options on the market.
@DanielKebedeNEU @strickomaster @secretHT1 @FloraSCooper @HonestHeadteac1 @smithsmm @RaeSnape @Headteacherchat @PieCorbett @TTRadioOfficial @RogersHistory @PaulGarvey4 @CensoredHead @chrisdysonHT @miss_mcinerney @MrHtheteacher @vicgoddard @teachwellall @SwailesRuth
If you’re not yet convinced, then please listen to this short video by UK Cardiologist @Sunny_Rae1 where she articulates all the reasons you *should* be convinced from a medical perspective…



And if you’re *still* not convinced, I give up…
Image
@Sunny_Rae1 PS. I won’t actually give up…

Our children need us to fight for them since they can’t do it for themselves.
@Sunny_Rae1 PPS. Here’s one more final attempt to convince you… everything you need to know about the benefits of air filters is right here 👇🏻
@Sunny_Rae1 PPPS. This just came out today too…

Bradford air filter trial: Schools with air filters had significantly lower pupil absence rates than those without.

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More from @_CatintheHat

Feb 22
FROM THE OLYMPICS TO NASA, WEARING MASKS IS BACK - EXCEPT IN HEALTHCARE

Brilliant article on how masking is increasingly popular with Olympic athletes, actors & astronauts wanting to avoid illness…

…but sadly, in hospitals, masking is rare & those who do are often gaslit.

🧵 Image
Here’s a link to the online version of this article by the brilliant Tess Finch Lees:
independent.ie/opinion/commen…
The link above is paywalled so here’s an archived link where you can read it for free:


(Please do also click the first link as well though to increase traffic & help persuade editors to publish more Covid stories like this).archive.ph/sfP52
Read 18 tweets
Feb 20
🏴󠁧󠁢󠁳󠁣󠁴󠁿 Something unusual & concerning in Scotland’s Covid data in the last few weeks.

There’s been a sharp rise in the proportion of hospitalised Covid cases which are children.

Currently over half of all Covid hospitalisations in Scotland are kids aged 0-14 years.

(h/t @gwladwr) Image
The data also shows that, since January, Covid incidence rates for these younger age groups have been going into the ‘high’ (dark blue) and ‘very high’ (purple) classifications, particularly the 1-4 years age group. Image
I’ve also taken a look at the England data and Covid positivity rates have been rising sharply in recent weeks in the 0-14 age groups.

Definitely one to watch in the coming weeks… Image
Read 4 tweets
Jan 30
🏴󠁧󠁢󠁥󠁮󠁧󠁿PUPIL ABSENCE - AUTUMN 2025

The DfE have now published pupil absence data for the Autumn term:

🔎 Pupil illness absence across the autumn term averaged out at 3.44% (compared to pre-pandemic average of 2.5%).

🔎 By the end of Nov, illness absence had soared to 4.7%.

🧵 Image
DfE commentary:

“The increases seen in the latter weeks of term were mainly driven by illness-related absence”

“This increase in absence is equivalent to approximately 500,000 less days in school compared to the previous autumn term.”

…e-education-statistics.service.gov.uk/find-statistic…Image
To anyone paying attention, these illness absence figures should not come as a surprise.

By early December, UKHSA was warning about how flu was spreading like wildfire through classrooms, leading to very high infection rates in school-age children (pink & green lines on chart). Image
Read 10 tweets
Jan 4
COVID & CHILD DEVELOPMENT

New US study showing impact on child brain development when their mothers are infected with COVID during pregnancy.

Results show:
🔎 Structural differences in regions of the brain
🔎Lower cognition & social-emotional scores

sciencedirect.com/science/articl… x.com/harryspoelstra…Image
And here’s another study, this time from Brazil (published Jun 2025), which also shows the impact of maternal COVID infection on child development.

At 24 months:
🔎 36% of infants exhibited cognitive delays
🔎 64% communication delays
🔎 57% motor delays

nature.com/articles/s4139…Image
And another study, just published this week (Jan 2026) in ‘Obstetrics & Gynecology’, came to similar conclusions…

“Maternal SARS-CoV-2 infection in pregnancy was associated with increased risk of adverse neurodevelopmental diagnoses by age 3 years”.

journals.lww.com/greenjournal/f… x.com/jama_current/s…Image
Read 4 tweets
Dec 17, 2025
“When it comes to flu, the focus is often on droplet transmission, but there’s also evidence of aerosol transmission. That means that ventilation & air filtration are HUGELY important.

“Are the Govt looking to improve that to help deal with all the respiratory infections?”

/1
It’s absolutely brilliant to hear Baroness Bennett raising this crucial question in the House of Lords this week.

Thank you, @natalieben 🙏🏻

You can read a transcript of the full question and response received below ⬇️



/2 hansard.parliament.uk/Lords/2025-12-…Image
Given the shocking state of ventilation in UK hospitals ⬇️…

3/
Read 4 tweets
Dec 11, 2025
This feels like an important breakthrough moment…

On the BBC News this evening, Medical Editor @BBCFergusWalsh clearly stated:

“As for facemasks, simple surgical masks are *not* good at stopping viruses. You really need a properly fitted tight respirator mask for that”…

/1
…which begs the question, why does the NHS infection control guidance STILL only recommend surgical masks for treating patients with airborne viruses like flu & Covid… and not proper FFP3 masks?

Even Baroness Hallett was rather perplexed by this during the Covid Inquiry.

/2
The IPC experts (Dr Warne & Dr Shin) who provided independent specialist advice to the Covid Inquiry both stated that IPC guidelines should be updated to recommend routine use of FFP3 masks when caring for patients with ANY respiratory virus.

So why has this not been done?

/3
Read 7 tweets

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