Saire and anyone else worrying about how Summer born children will cope - my eldest DD is now in year 2. She's the youngest in her class as was born at end of August.
Before she started I seriously considered deferring as I didn't think she was ready to go. From a slight speech impediment to tantrums, issues with buttons and labels on clothes, I was worried she'd struggle. We'd also only moved to the area 4 months before school application deadline so she hadn't attended the school's nursery and didn't know any children who would be going from the private nursery.
Barring an issue with dinnner lady and school dinners, DD has never been anything but eager to go to school. She's never done the tears and clinging thing in the playground (apart from when she's pissed about so much in morning that by time we get to school her class' line has already gone in. She isn't top of the class but she's making good progress and despite not talking to anyone for the first two months of reception, she's made some lovely friends and really enjoys school.
DD was in breakfast club and after school club on Tues and Weds during her Reception year. This was the only issue we really had with her going to school when she'd just turned 4. She was utterly knackered and would be so hugely stroppy on a Thursday. By Friday I'd make her get into pyjamas as soon as we got home then we'd snuggle on sofa (well, she would, I'd be sat on floor crawling around playing with very active toddler DD) she'd have tea on sofa watching tv and straight up to bed or she'd be a nightmare all weekend. As she's got older I've changed jobs and no longer need after school or breakfast club. Ironically she now has more hours of extra curricular stuff - one activity at school, three away from school - but as she's older and the activities are a different setting than a kind of classroom set up, she's not as knackered and stroppiness is more due to her nature (or having an unreasonable mother) rather than school overload!
DD2 was 4 in September and will start school September 2017. It'll be interesting to see how she does as she'll be one of the eldest. It's strange to look at DD2 and realise that at the same age DD1 was in school.
I've got anxiety about DD2's school place - she should get in as we're in catchment and her sibling attends but there's such high demand for school places here (every school within 10 miles over subscribed) that there's no guarantee. Also, we desperately need to move house but nothing's coming on the market within catchment (tiny catchment area) so we'll probably have to stay put until September or we could risk DD2's school place.