It does astound me though how apparently a week off to go on holiday destroys a child's education but apparently they will all catch up, although I am not confident on this for every child
You're mixing up two different things.
Anyone remember when the new curriculum came in? (thank you Michael Gove). Fab for the little ones just starting it and for those who came in after.
This new curriculum effectively jumped 2 years. And they just started teaching it.
I was REALLY worried for my DD (who was in early secondary school at the time).
but the teachers did what teachers do... they plugged the gaps. My DD did absolutely fine in her GCSEs, and looking at the results over the years since that new curriculum was implemented, she wasn't alone.
Plugging the gaps is what teachers DO. So for those of you worried about September and time out of school, have confidence that the teachers will do what needs to be done. They do it all the time.
However, in normal times, taking your child out for an unnecessary week IS an issue. I was chatting to a Yr 6 teacher about this just this week (along the lines of him explaining to me just what the online work was that his class were doing btw).
So, for literacy, they shared a book, which they had available in pdf form (because it was online working). The children read the book or extracts from it. Together. Then they discussed it. They did some comprehension about the story. Then they were set some more complex work - what one character might have thought, what their motivation was, what was going on behind the story, etc.
If that's what's happening in your child's classroom the first week back after half term and they miss the first week (the spoiler for the story and starting to read the book together) because you're off on a cheap holiday then ALL the work following on from that is fucked.
[btw, I'm not a teacher, but I do work in primary schools]