I've been reading this thread since Wednesday, and not commented because other people have said it but drinking now
OMG! Reception children playing around Year 6 children? UNHEARD OF in schools where I work. They're kept well away from each other. The EYFS children are usually segregated from the rest of the school by fences or geography or both. Actually, usually EYFS have their own space, and often KS1 and KS2 are kept separate as well.
I can understand if they're starting to integrate reception kids ready for transition into Yr 1 by moving them to the other playgrounds, but this should be very closely supervised, and usually if it's early (like this is) at times when most of the school is inside doing lessons.
SATS week in school is a bit bonkers, and lots of the normal rules don't apply, but all staff will know when it's SATS week and should plan accordingly.
It's shit that the year 6 children weren't being supervised, but you can kind-of argue it, esp with the lunchtime supervisors there to keep an eye. It is absolutely UNACCEPTABLE that reception children are not closely monitored. There is no way that a reception child should have been able to wonder over to see a sibling without being clocked by an adult and monitored. What if that child had been hit by a cricket bat or ball? To me, that's the issue. And I think it's huge.
Staff may not have been there in time to stop the shoe throwing, but they bloody well should know if a reception age kid was wandering up to a load of year 6's, who should be playing in a completely separate part of the school.
Boo hiss to all the PPs who are saying that 11 yr olds shouldn't kick off their school shoes to play on a boiling hot day on a school field (so no broken glass or anything dangerous). Take your collective sticks out your arses! The kids have had a monster week, and deserved to have some R&R without a consequence such as this.
There are moral arguments about whether the reception kid's parents should pay or not. That's up to them.
And the Headteacher sounds like an arse. I don't think the problem is the missing shoe. The problem is the orthopaedic insert, which the school should absolutely pay to replace. Shame on them.
So, OP, I DO think you've been shabbily treated by the school. And I think you should press this point to them.