Sure. But why are they mailing letters? I remember being 18 myself (a looong time ago), and having a helpful adult shocked that nobody had ever taught me how to write a check. I think I've written a total of 8 in my whole life now?

If a British 12 year old today were to need to write a cheque, I'd expect they would need to look up or be told how it's done.

I wouldn't expect them to need to buy a pen first, or to need several attempts to write 10 words nearly.