It doesn’t have to be a parent that attends school to hand clothing in.
It could be a grandparent, aunt/uncle, family friend that stays home. Parents should at least try and have an emergency contact that’s available during school hours. What would they do if they got into a terrible situation and couldn’t collect their child? Surely it’s only normal and sensible to have a back up in place when you are a working parent.
With this situation, it may be mindblowing but back in the 90s when my Mum was nursing and found herself in this situation with one of us kids, knowing that she couldn’t leave the ward, she called up the cheapest department store, asked to be put through to the kids department, explained the situation, asked for the cheapest leggings/T-shirt combo and a packet of underwear to be set aside with her name on it, paid by card over the phone and then called a local taxi company to pick them up and drop them off at school reception. Clothes arrived in 20 minutes and only 5 mins on the phone. We weren’t rich, in fact we were struggling to get by on her part-time wage, but she believed it was important for always have £20 spare for emergencies exactly like that.
It’s even easier now. School or Mum Friends WhatsApp Group “Lily May has had an accident and I can’t get to school. Is anyone off today and able to help me get some clothes to school?” If I was off, you’d bet I’d be taking some spare clothes as dropping them in the office. Plenty of us work shifts/irregular hours/flexibly from home and have empathy for a kid that’s sitting in mess.
My friend’s newborn was 14lb. Yes. One stone. So obviously nothing she took fit him and she had nothing to take him back in and not much in the way of family to help. She FB messaged a local baby shop, they sent some clothes in an Uber. Sorted in less than an hour.
There are always ways and means.