Titsywoo, I don't completely agree. DS1 is quite organised actually, but talking of fairness, it is a huge leap from primary to secondary school for him/us. Primary school uniform was a logo sweatshirt, generic white top and black trousers, with black shorts as an option in summer, with girls having an option of gingham dress, with only one or two days a year when it's strictly enforced - trips until recently (now they have bought a set of hi-vis tabards) and photographs mainly. No detentions. At one point we had 72%+ on free school meals, and this has gone down due to eligibility changes not a change in financial circumstances.
Most if not all of us on this thread have probably done our best to make sure our DCs are ready for secondary school with everything they need. Most of us probably have more financial resources to do than the majority of families at my DCs' primary school and a significant number at DS1's secondary. In fact, my dad kindly stepped in to buy uniform and a scientific calculator for DS1, and my sister also bought some of his new stationery. But I am conscious that this probably comes to between £300 and £400 (£200 at the uniform shop, 2 pairs of shoes, scientific calculator, assorted stationery) . That is a lot of money round here, and I suggest it's not something the kids are meant to sort out on their own anywhere.
I am really concerned that some kids will face detention because their families can't afford to or won't prioritise spending so much money on stuff for school. That won't be my DS but it's also down to us as his parents to make sure his clothes are washed and clean and ready when he needs them and I find the potential for him to be punished if dp and I make a mistake a bit worrying.