I know balletgirlmum it does doesn't it. Ds2 is very worried about one particular lad in his form that seems to get a detention in almost every registration group and lesson, plus a few more for being lost in various corridors when he should be in lessons. He just seems completely unable to organise himself. (Ds tends to worry about and want to look after pupils that struggle or may have SEN, I think from being used to having a brother who has ASD.)
The problem is, everyone in our town wants their dcs to go to this school (for us it just happens to be the school that my dcs' primary feeds into). The school has form for turning down pupils that have SEN, so many parents choose not to get their dcs assessed/diagnosed/supported in primary so that they're not flagged up during admissions, without realising what this will mean on a daily basis for them, in real terms, when they are actually there.
My ds1 is statemented. We visited this school when he was in Y5 and again in Y6 on the advice of our ASD outreach team and LA Officer and were told he would be fine there and they looked forward to receiving his application. Then a couple of weeks after the applications went in we got a letter, sent directly to our home (contravening SEN admissions policy) flatly refusing to take him (and coincidentally, all other statemented applicants that applied that year) claiming they couldn't meet need.
This is how he ended up at an out of area independent, because all the schools in our area are now academies of a similar size and set up, so if this school couldn't meet need, then neither could any of the others, so effectively this school gave all the other schools an easy get-out clause.
That said, knowing what I know now, he'd never have coped there and I'm glad he didn't go. He needs constant ad-hoc support with organisation and anxiety management and there's no way he could manage to be organised to the standard they expect, even with lots of additional support.
I am currently aware of several pupils who have SEN in my ds' old primary school, whose parents have chosen not to push for support, so they can get into this school more easily and it breaks my heart to think what their dcs are going to go through when they get there. 
It is a very good school, but very academic, with very high expectations of their pupils in terms of both behaviour and achievement. Ds2 and dd will be fine there, but I would never recommend it to parents of dcs that struggle with organisation or concentration.