It's hardly a secret that schools in England are lacking funding 
Schools/unions/parents have been going on about it for years, at least since 2008/9 downturn. Even prior to covid schools have had to cut back in all areas, mostly resulting in the loss of support staff/extra teachers, leading to increased class sizes. There has been lots of media coverage about this, particularly as some schools switched to a 4.5 day week to afford to keep running which has an impact on parents directly- Jess Philips is an MP that was personally affected by this, and was interviewed at the time raising awareness of it.
I am guessing @HikeForward that in the NHS you have handsanitiser, masks, PPE, hand soap provided for you? Staff in my school have to provide that themselves- there is handsanitiser in classrooms but we are strongly encouraged to bring our own, as are the pupils, so school can minimise the cost, there is no soap in the staff loos (I have provided it since march, when it was publicised that soap can break down the virus' outer layer), we have to provide our own masks, and staff have overwhelmingly opted for washable, etc etc.
Schools can't just email parents outlining where we're struggling, expecting support- DfE would come down like a ton of bricks on any HTs that did that, and funnily enough many of the pupils' parents are also struggling for money, which we're more than aware of (hmm, do nurses provide clothes for patients that arrive in filthy, holey inadequate clothing?).