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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To think a child born on the 5th august isn’t that young for their school year

208 replies

Penny779 · 15/02/2026 16:36

As there are still three weeks left of the academic year so still could be many children much younher

OP posts:
ladygindiva · 15/02/2026 18:19

Sausagescanfly · 15/02/2026 16:40

In a class of 30, 2.5 are born each month (I acknowledge that you can't have 0.5 of a child).

So they'd typically be one of the 3 youngest. That's quite young.

Although bizarrely in my DC class of 30 there are 10 in December and similar in August

artforme · 15/02/2026 18:22

Not convinced at all a lot of people actively try to avoid August; it’s the most popular month for babies.

MyTrivia · 15/02/2026 18:25

YABU

stichguru · 15/02/2026 18:30

Penny779 · 15/02/2026 16:36

As there are still three weeks left of the academic year so still could be many children much younher

Your average class is 30 children, some are less
A year has 365 days
3 weeks is 21 days
365- 21 = 344
I'm not going to work the probabilities, but given that the probability of a child being born on any one of the 365 days of the year is equal, I'd say when you are looking at only 30 days when kids are born (maybe less if there are less than 30 kids in the class, or there's one or more that share a birthday) the probability that all the other 29 children will have been born in the 344 days before those last three weeks, and no others will have been born in 21 days after, is really quite high.

2026Y · 15/02/2026 18:30

About 92% of kids will be older so I’m not sure if YABU or you’re just mathematically literate.

FreebieWallopFridge · 15/02/2026 18:32

You’re wrong

TheCountessofLocksley · 15/02/2026 18:33

MissingSockDetective · 15/02/2026 16:37

There won't be many younger really.

lol in my daughters class of 27, 9 were August babies (including her) and 6 of them are younger than her!

Catwalking · 15/02/2026 18:33

I’m near 70, my b’day is beginning of July, I still remember being 1 of the youngest in my year as a bad thing. My eldest was last days of Aug, I so wish I’d known i could have let that child be in the year below.

imnotwhoyouthinkiam · 15/02/2026 18:36

Catwalking · 15/02/2026 18:33

I’m near 70, my b’day is beginning of July, I still remember being 1 of the youngest in my year as a bad thing. My eldest was last days of Aug, I so wish I’d known i could have let that child be in the year below.

Unless you were a much much older parent you wouldn't have been able to let them be in the year below. My DS is 21 and it wasn't allowed when he was at school. We could delay his start until he was actually 5, but he would have missed reception.

KeepOffTheQuinoa · 15/02/2026 18:37

When they start in Reception September born children have been alive more than 20% longer than them. 11 months and 1 week is a lot in development terms when you are 4 years old. So of course they are young in terms of the age range on the year. It is very noticeable on terms of maturity.

The impact reduces as they go through school though.

WhatAboutThisUser · 15/02/2026 18:38

Since there are 26 days after her birthday in the school year, there would be 26 / 365 = about 7 in 100 kids who are younger.

Looks like the ONS publish the number of people born on each day, so you could work it out exactly if you had the time or inclination. August doesn’t look particularly low.

https://www.ons.gov.uk/visualisations/dvc2381/heatmap/datadownload.xlsx

https://www.ons.gov.uk/visualisations/dvc2381/heatmap/datadownload.xlsx

User3857377 · 15/02/2026 18:38

Of course they will be one of the youngest, they don't even have their birthday during the school term, the last possible month out of 12. What difference does weeks make Vs those born in the first and second term? September and October have consistently been the highest rate of birth months for many years in the UK as well.

Coffeeandbooks88 · 15/02/2026 18:40

My daughter is on the fourth. I think she is pretty much the youngest in her year.

Trampoline · 15/02/2026 18:41

Isn't "that young". What a bonkers post. OP, do you mean to ask how August babies feel versus their peers or how they get on? Of course they are going to be young in their year, unless you hold them back for the year in which case they'd be one of the eldest!

Zanatdy · 15/02/2026 18:43

LaughingCat · 15/02/2026 18:02

I was born 16 August…and still consistently performed in the top echelon of my year. I didn’t have tutors (though I did have a bit of helicopter/tiger cross mum 😂). I had friends in the year below and my best friends were in my year, but with Sept/Oct birthdays so nearly a year older than me. None of us really saw a difference, either in academic performance or interpersonal skills. I often think that ‘XYZ is disadvantaged because they’re younger than some of the others in their year’ is a bit of a cop out - it’s an excuse, really. In my year, abilities were spread across all birth months.

My son was one of the top achievers in his year group too, despite his mid Aug bday. He was behind a little when he started, as his private daycare didn’t do phonics. DD was also behind, and in year 1 she was in a class of children who needed extra support, and she achieved the highest GCSE grades in the 350 pupil year group (she wasn’t an Aug baby, but just she was a little behind at first too but caught up). I know some parents like to keep Aug babies back, but my DC’s father is an Aug baby too and he has a high profile successful career. I guess it’s more the parents who worry, the kids tend to be fine.

Midnights68 · 15/02/2026 18:43

Some people will argue that red is yellow won’t they?!

Coffeeandbooks88 · 15/02/2026 18:44

My daughter is very bright and one of the tallest but maturity wise much younger than her friends.

FamilynotMaiden · 15/02/2026 18:45

My eldest was born mid-August.
As a primary teacher I got all sorts of "Oooooh that's bad timing!" comments. I found it quite upsetting tbh considering I'd gone through miscarriages before him.
He absolutely was NOT emotionally ready for school when he was just 4. I was fortunate enough to be only working part-time when he started so kept him only part-time until he started full-time only when he legally had to.
He got his A-Level results just a few days after his 18th and got A star, A star, A star, A so tbh I think we can safely say it didn't make a difference at that point.
The biggest complaint I got from him was that he was the last of his friendship group to be able to legally drink!!

Flyingintotheunknown · 15/02/2026 18:45

If you are in the UK, a child turning 5 on 5th August isn’t the same (in school years) as a child turning 6 on the 1st September. That child will be one of the very youngest in their school year. Because a school year starts in September. So those born in September will be classed as the year above and will turn 6 in September rather than 5, so that’s almost a whole year’s difference between them….If that makes sense. So August born children the youngest in their year.

It’s the same as a child turning 5 on 31st December and a child turning 6 on 1st January. It’s just that a school year tends to start in September rather than January.

Midnights68 · 15/02/2026 18:46

artforme · 15/02/2026 18:22

Not convinced at all a lot of people actively try to avoid August; it’s the most popular month for babies.

I’m pretty sure the ONS say that mid-late September and early October are the most popular birthdays.

FuzzyWolf · 15/02/2026 18:47

It’s one of those threads where the OP says something ridiculous and then never returns.

GreenWheat · 15/02/2026 18:48

Oh don't be silly now, are you on the wind up. Of course an August born child is young for the school year.

susiedaisy1912 · 15/02/2026 18:49

Yabu. As a person who’s birthday is in August I felt it a lot at school when other kids were almost a year older than me. Makes a big difference.

pizzaHeart · 15/02/2026 18:49

There might be one or two bit it’s not many.
In my DD’s school out of 50 children there were none.

JustGiveMeReason · 15/02/2026 18:50

Come on @Penny779 - do you want to come back and explain why you have suggested this ?

Unless you are in Scotland, where they might not be, but it would have been pretty relevant to include this in your post.