My almost 6-year-old has just started year 1. All year last year in reception he was unhappy - he has really changed. At home, he was moody and would lash out (tantrums, hitting, quick to cry about things).
I went into school to talk about it, but they dismissed me. They agreed he did look unhappier than the start, but said he was fine and it was probably because he was struggling to keep up with phonics work 
Although when they said this, I was relieved because that’s something I can help with! So I did, but he didn’t get any happier at all.
I went in again, asked about friendships, they said they’d keep an eye. Don’t think they did.
Anyway then the summer holidays happened and he turned back into his normal self again - happy, sweet, no tantrums, no tears. I didn’t realise how much he’d changed until he turned back over the summer.
We’re a week back into year 1 and he’s the same as he was last year. Waking up with nightmares every night, quick to cry, hitting.
I don’t know if this is normal? Is this how some children are, without anything being “wrong”?
And I don’t know what to do about it!
It’s an “excellent” state school with a reputation to match...