@user1479588581
@AuroraCake
Life-long might be a bit much to be honest. But certainly long-term is accurate.
I think the issue is that while retention happens in the US and Europe this situation is not at all the norm in the UK and it doesn't really happen all in the State sector.That meant my relative was constantly having to explain their situation, right up until sixth form and these questions were really difficult to answer. No child/teenager wants to admit to having social/learning difficulties and have talk about themselves in those terms again and again. It's also extremely difficult as a young child to tell an adult or older child to mind their own business.
There were issues at 11+. They wanted to transfer to a grammar but couldn't because of being in the wrong age group.
Then, there were the constant flow of small issues that over time eroded their self esteem. If they struggled with something compared to others in the class it felt worse because they were already a year behind so should understand. Or if they did well, it was because they were at an advantage because they were a year ahead. Plus, the odd horrid teacher that would make my relative say their age out loud to the class as a way of humiliating them. My relative felt his excellent GCSEs didn't really count because they were the same as those of kids over a year younger and some had done better.
Also I would say do not underestimate the psychological impact of telling a child of 4/5 that they have failed on some level - even though you, of course, don't use those words. At such a formative age it does stay with them.
Although things were a better socially initially, once they got to secondary the kids in their class had caught up and social difficulties became an issue again - so it didn't really solve that area either.
I'm not saying my relative's experience is universal and it did take place in 90s, so things may have moved on now. For late Summer born babies - I'm sure it's ok if handled well. Also if there are a number of children in the same class experiencing the same situation than it's a bit more digestible.
But I think for someone born May/April and earlier and the only one going through this situation it really is worth thinking carefully about whether this is a long-term solution.
The point I want to make is repeating a year is not the gentle option it might appear. It's a sticking plaster that might seem ok for a year or two. But it's really not going to be a long-term solution if the child has ASD or some other form of neurodiversity or just needs some support with catching up in a few areas because they are so young or due to external circumstances like lockdown.
I strongly would advise you to ask the school what other support they will give your child before taking this option.