Is this a normal stage?

[Itsalldifferentnow]

Dd recently turned 4 and started school. For the few months she’s been so angry/sort of aggressive. It’s not all day and she can be her normal, happy self. But something tiny can set it off and she’ll shout and throw things.
This morning she was playing happily in bed with her toys and one kept falling down and she went nuts and had a meltdown, she was shouting and saying ‘Leave me alone!’ I was nowhere near her. Is this something she’s hearing at school?
She came downstairs for breakfast, starting shouting how she wanted to do it herself and then threw her water bottle on the floor. Why is she so angry? Should I be worried or is it a normal phase that will pass, and when?

*Past few months

I would say it isn't true of every kid, but it isn't that unusual.

There is a huge amount of emotional energy which goes into being 'good' all day at school, and for some kids, expecially younger ones, they come home and melt down all over parents.

You are the safe place, and the things that they can't say at school come spilling out.
Which doesn't mean that things are necessarily bad/unhappy at school, but rather that she is expected to be well behaved, but in the course of a normal day, there will be times when she would prefer to be cross or tell someone to go away, but she doesn't because she doesn't want to be told off.

I would expect that you see a diminishing of it over half term, and then at each holiday, and gradually it will be less during term time.

But over half term I might try playing some 'going to school' games with her and her toys and seeing what comes out, what she says, in case there is something bothering her.

@steppemum Its just the language of ‘Leave me alone’ and ‘Go away!’ She never used to say/shout this before

she has probably heard it at school.
In reception my kids overheard every single swear word on the planet, plus some that I had never heard.

All from one little girl, whose speach copied her mums.
But the class was lovely.
So I wouldn't worry about it too much.

I guess the question is whether she WANTS to say this to someone who is bothering her and she is trying it out at home first, or if she is just copying something she has heard and is curiously using a new expression.

Whne I was little I used to sleep talk and shout "go away. Leave me alone. shut up"

I was always dreaming about my DB and I never stood up to him IRL so it came out in my dreams 😀 (normal sibling squabbles, I was just a doormat)

Anyway, agree with PPs

School is a turmoil of heightened emotions and having to behave in a framework. Coming home and releasing emotions is totally normal and healthy.

They will hear every swear word ever from reception and some phrases which will shock you. Mine quickly learnt what they could say at home and what stayed in the playground. She might be your first but her classmates could have several older siblings