notfluffly (not having a go, just trying to explain a little).
my dd1 is at a similar school to the OP's dd. rural, down soem nasty lanes, and a SN school. there are 22 children at her school. 18 of who come on transport.
only 3 of the children live within 5 miles of the school, the furthest away travels about 40 miles in.
I do not know the stats for the OP's dd's school, but it will be similar.
we are not talking closing down a school with hundreds of children. but a small school, where all the children have mobility and health problems (meaning even a moderate delay in getting to/from school can have some serious consequences), most of whom will be taken on transport - and transport may originate miles from the OP's home and the school, so conditions unknown (and then unknown in reverse at teh end of the day).
sometimes, it really is more sensible to err on the side of caution. my dd has gone in today - the roads are ok, but there was considerable fog as I dropped her off. that may well worsen, but I am 20 miles away, and will not know. I rely on the school to tell me, but this now means I am at home all day, waiting for that call - can't get into town etc to do stuff, in case the school ring for me to collect her early.
alongside this, at dd1's school, all children have a full time 1:1. they all need that 1:1. if the right number of staff cannot get in, then the school cannot operate (and again, the staff travel up to 90 mins to get in - specialised staff do not grow on trees). they would manage with one or two not making it in, but anymore, and the school closes - how do you pick and choose which children (when you don't know the conditions of the roads at home for those children) are the ones to come in and be supported?
It was not a precious ask of the OP at all -to be fully informed, and know that her dd (and her, in case of school closing early) will be safe and well cared for. and just trying to avoid the situation she mentioned where her dd was at school, transport couldn't run because it was unsafe, the OP couldn't get there because it was unsafe (WAV not being the easiest things to manoeuvre down rural lanes at the best of times, never mind the snow and ice) and she had to frantically ring around to find someone to ensure her dd could get home again.