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15 year-old know it all son

308 replies

Spiritedlight · 24/02/2026 10:00

Hi everyone

I would like to have thoughts on how to handle/progress with son. He's 15, smart, lovely, very opinionated, completely resistant to being told anything and thinks he knows it all.

For example, a discussion about astrology/space etc - whilst DH is very knowledgable, DS will disagree with everything DH says, and quote, frankly, bollocks a lot of the time.

If we talk to him about the school's recommendations for self-study in Year 10 - which I know he's not doing, because I know what they expect - e.g., 2 x 30 mins of going over triple science lessons a week -he will completely tractor over the discussion with comments like, "I'm doing it through homework, it's about quality not quantity (he does the bare minimum), my grades are very good (not as good as he thinks) etc etc". Everything gets brushed off, diminished, he knows best. Always.

It's the oddest, most annoying thing. I've tried to talk to him about it but I don't get anywhere - except that he thinks we are telling him off, which suggests to me this is a defence mechanism. And we are really not telling him off in those moments, we're trying to open up conversation and be supportive about these school years.

I'm worried about his grades and how he's just going to not fulfil his potential. DH thinks let him get on with it and fail mocks etc, so he'll see for himself. But I don't know what to do.

OP posts:
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EvieBB · 03/03/2026 20:25

NoFiller · 03/03/2026 14:39

Sounds like the typical thing a Capricorn would say.

😂

MorrisonsPlatter · 03/03/2026 14:51

Cancel the cheque.

ZenNudist · 03/03/2026 14:45

My15yo is the same. Commiserations

ChimpanzeeThatMonkeyNews · 03/03/2026 14:39

😂

NoFiller · 03/03/2026 14:39

smithsgj · 02/03/2026 00:05

Because astrology is a load of bollocks and it isn’t something you can be “knowledgeable” about

Sounds like the typical thing a Capricorn would say.

smurfingbutgenerallynice · 02/03/2026 11:06

Sharpcorners621 · 27/02/2026 14:37

It depends what you mean by “leaving them to it” though doesn’t it?

For example, down thread, I advised turning responsibility for their study over to them, but when I say that, I didn’t mean abandoning all expectations of them, or not checking up on their progress, or not being interesting in their study, exams, outcomes and future career choices.

Imho, if a lad hasn’t got in to the hang of self study and motivation around about the age of fourteen, any amount of nagging is going to be counter productive.

He needs to learn to discipline himself first and foremost; there’s only so much you as a parent can do for them. But of course, stay engaged, stay interested, be there, and keep the lines of communication open. And stand in the side lines and facilitate a good study environment, be a good role model and respond to requests and questions. But the actual study and how much they do, is down to them.

I think that’s what most people mean anyway.

I think it depends on the sort of support the teen has had in the past from parents and from school. In relation to good schools, good study skills will be all around them and it is easier to leave them to it. In relation to a lot of (probably most) schools, however, more time is spent on behaviour than on learning or study skills, and without parents stepping in and giving a lot of guidance, and sometimes resources, a midteen can't be left to it and to do well. And it depends on anxiety levels too, if a teen is so stressed for whatever reason they can't think straight then more support is needed. And if a teen is behind then they are looking at potentially a mountain of work and won't be able to be left to it.

I don't think your description is "leaving them to it" incidentally, I'd say your description is medium level fairly hands on as you are checking up?

I don't think nagging is helpful, though, I agree! I think coercion and bribery is more likely to be successful, ha. With a very anxious teen, or someone very behind, reading through notes with them bit by bit and allowing them to learn those bits and testing them is really effective. It shows them how to do it when they are ready to do it themselves.

TheIrritatingGentleman · 02/03/2026 03:17

smithsgj · 02/03/2026 00:05

Because astrology is a load of bollocks and it isn’t something you can be “knowledgeable” about

So you also think it's perfectly fine for a child to be so rude to their parents? They don't have to believe in it, but there are books on it so the DH was probably just talking about what he's learned from that. A lot of people think the bible is 'bollocks', it's still studied and they even talk about different religions in schools.

My teenage DS's don't agree with everything I say, but they don't tell me I'm talking 'bollocks'. Same way when they think something that I don't agree with I don't speak to them like that either. It's called respect.

smithsgj · 02/03/2026 00:05

Spiritedlight · 24/02/2026 10:14

What kind of comment is this? That's just rude

Because astrology is a load of bollocks and it isn’t something you can be “knowledgeable” about

Retiredfromearlyyears · 01/03/2026 20:55

Listen to your husband. Let him fail his mocks! Maybe knock some of the foolishness out of him.

NDFB · 01/03/2026 20:23

Astrology is a bad subject and should not be in the household and is certainly NOT education! No one should be promoting astrology to anyone under 18. Lies and superstition.

murphys · 01/03/2026 14:32

HelpfulAnnie · 01/03/2026 14:14

Did you mean astronomy rather than astrology? PP may not be a big believer in star signs which is why they may have been a little unkind.

I think you are taking the piss now Annie.

This isn't helpful.

Reading the thread could be though.

HelpfulAnnie · 01/03/2026 14:14

Spiritedlight · 24/02/2026 10:14

What kind of comment is this? That's just rude

Did you mean astronomy rather than astrology? PP may not be a big believer in star signs which is why they may have been a little unkind.

Pinkissmart · 01/03/2026 12:12

PointlessTrip · 24/02/2026 10:07

Has he always been like this? I have known some boys go through phases of this cockiness. It does seem to pass with maturity. Very tedious to be around though!

This

Oldwmn · 01/03/2026 12:05

Spiritedlight · 24/02/2026 10:00

Hi everyone

I would like to have thoughts on how to handle/progress with son. He's 15, smart, lovely, very opinionated, completely resistant to being told anything and thinks he knows it all.

For example, a discussion about astrology/space etc - whilst DH is very knowledgable, DS will disagree with everything DH says, and quote, frankly, bollocks a lot of the time.

If we talk to him about the school's recommendations for self-study in Year 10 - which I know he's not doing, because I know what they expect - e.g., 2 x 30 mins of going over triple science lessons a week -he will completely tractor over the discussion with comments like, "I'm doing it through homework, it's about quality not quantity (he does the bare minimum), my grades are very good (not as good as he thinks) etc etc". Everything gets brushed off, diminished, he knows best. Always.

It's the oddest, most annoying thing. I've tried to talk to him about it but I don't get anywhere - except that he thinks we are telling him off, which suggests to me this is a defence mechanism. And we are really not telling him off in those moments, we're trying to open up conversation and be supportive about these school years.

I'm worried about his grades and how he's just going to not fulfil his potential. DH thinks let him get on with it and fail mocks etc, so he'll see for himself. But I don't know what to do.

Sounds like a typical smartarse teenager to me.

murphys · 01/03/2026 09:02

Spiritedlight · 01/03/2026 08:20

Comments like this seriously piss me off. What an assumption! So unhelpful.

Yes just ignore them OP.

Those who actually have parented teen boys get you 100%.

ChimpanzeeThatMonkeyNews · 01/03/2026 08:22

Take no notice of them, @Spiritedlight.

They’re talking shite, @SpiritedlightThey know nothing about you or your son.

Spiritedlight · 01/03/2026 08:20

Allog · 28/02/2026 20:55

He’s clearly been spoiled and over indulged earlier in life. Reap what you sow.

Comments like this seriously piss me off. What an assumption! So unhelpful.

OP posts:
Beesandhoney123 · 28/02/2026 22:43

Nofeckingway · 24/02/2026 10:53

This

😃
He sounds like my ds. I do draw the line at back seat driving, from someone whom hasn't even turned the car on yet.

Also a fan of bare minimum. A lot of it is striving for independence, practising doing it his way. We dog walk a lot. He lectures me, then eventually he runs out of steam and talks normally. It doesn't last.

He joined the cadets, which helps and gets him out of the house two evenings a week and some weekends. He almost certainly thinks we are boring middle aged old farts whom unbelievably hold down jobs. He keeps this to himself mostly.

Any shit, wifi off.

NoIDontWantToDoIt · 28/02/2026 22:24

I think it is something about 15 yr olds. My son is currently the same. I have learnt to let it go. I give my opinion/fact/idea. It is up to him whether he takes it on board or not. He can then deal with his own mistakes. I have found he is at that age where they are starting to realise parents don't know it all, realise they still have a lot to learn but stubbornly don't want to admit it, and trying to navigate all the hormones etc, as well as all the challenges that comes with no longer being a child, but still not yet a man.

Allog · 28/02/2026 20:55

He’s clearly been spoiled and over indulged earlier in life. Reap what you sow.

cantbebothered101 · 28/02/2026 19:56

Spiritedlight · 28/02/2026 19:20

I don't agree with this line "Imho, if a lad hasn’t got in to the hang of self study and motivation around about the age of fourteen, any amount of nagging is going to be counter productive."

A 14 year old boy is wildly different to a 15 and 16 year old boy. I've noticed a huge difference in a year. I don't think that you can write off them finding motivation and drive if they haven't found it by 14.

Completely true. I spoke to one of my son’s teacher when my son was 15 because I was concerned about his lack of focus and motivation to study. He told me that in his 20 years of teaching, boys mature later than girls and for the most part (there are always exeptions before the Mumsnet brigade tell me how focussed their 15 yr olds are) it takes boys until they have a real goal in mind like a university course or otherwise before they are motivated to really to any work, they just don’t see the point in it any earlier. So realistically it can even be 17/18. I have a girl and two boys and the two boys have had a completely different attitude the whole way along. One of my boys age 17 is in his penultimate year before university (5th yr in Ireland, they leave school at end of 6th year) and the penny has suddenly dropped!!

So in no way write your son off now, he’ll get there and it doesn’t even have to be a particularly academic route x

EvieBB · 28/02/2026 19:41

Spiritedlight · 28/02/2026 19:24

The number of people who have repeated since since my correction makes it clear that most people a) don't read the thread b) or even the OP's posts before commenting.

I read about 30 comments before posting which was sufficient I felt....I didn't want to have to read pages and pages in to the thread on the off chance that this issue has already been addressed

Spiritedlight · 28/02/2026 19:24

EvieBB · 28/02/2026 19:21

Do you mean astronomy (not astrology)?

The number of people who have repeated since since my correction makes it clear that most people a) don't read the thread b) or even the OP's posts before commenting.

OP posts:
ChimpanzeeThatMonkeyNews · 28/02/2026 19:21

This was established ages ago. The OP corrected it 10 minutes later.

EvieBB · 28/02/2026 19:21

Spiritedlight · 24/02/2026 10:00

Hi everyone

I would like to have thoughts on how to handle/progress with son. He's 15, smart, lovely, very opinionated, completely resistant to being told anything and thinks he knows it all.

For example, a discussion about astrology/space etc - whilst DH is very knowledgable, DS will disagree with everything DH says, and quote, frankly, bollocks a lot of the time.

If we talk to him about the school's recommendations for self-study in Year 10 - which I know he's not doing, because I know what they expect - e.g., 2 x 30 mins of going over triple science lessons a week -he will completely tractor over the discussion with comments like, "I'm doing it through homework, it's about quality not quantity (he does the bare minimum), my grades are very good (not as good as he thinks) etc etc". Everything gets brushed off, diminished, he knows best. Always.

It's the oddest, most annoying thing. I've tried to talk to him about it but I don't get anywhere - except that he thinks we are telling him off, which suggests to me this is a defence mechanism. And we are really not telling him off in those moments, we're trying to open up conversation and be supportive about these school years.

I'm worried about his grades and how he's just going to not fulfil his potential. DH thinks let him get on with it and fail mocks etc, so he'll see for himself. But I don't know what to do.

Do you mean astronomy (not astrology)?

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