Our school had FOUR dress up days so far this year - and none of them were stuff we already had in. Has cost us a small fortune. And then we got the letters home for requests for costumes for the Christmas play.
I don't mind paying trip costs, even though ds (aged 7) has a residential one this year costing £150 which I'm really struggling to find the money for, but he really wants to go and I don't want him ever to feel left out because of money (still have clear memories growing up of hiding demanding money letters from my mum so she didn't get upset). The raising money type things (cinema events, charity events) I grit my teeth and get on with, they're a necessary evil.
But FOUR dressing up days in a term?!! FOUR! I wouldn't mind if they were dress in your own clothes day, but no they were a specific outfit or colour that we had to provide. I just don't think they realise what a hidden cost that is, especially if you have more than one child at the school. Must have spent well over £70 this term on extra clothes I wouldn't have needed to have bought otherwise, and that was utilising Ebay and Primark extensively.