Is anyone else finding their four year old's behaviour challenging since starting school?
DS is constantly grumpy and frustrated. I've been putting it down to tiredness but he's also being very rude and deliberately naughty, which is really out of character for him 
Just now he had a full-blown tantrum because he broke his clay model into pieces as I was getting the paint ready, and therefore couldn't paint it. This morning he pushed his little sister over because she was 'touching his clothes' and it had made him 'angry'.
All part and parcel of starting school or something to 'nip in the bud' and sort out? He just turned four in July, so I wonder if it's all getting a bit overwhelming for him, though he seems to absolutely LOVE school and his teacher said he's fine during the day, no issues whatsoever.
Any advice?