I wasn't suggesting that. We get pretty good information here in Kent - the local radio stations broadcast details of school closures, and they also appera on a web page.
It's not just H&S. The number of teachers required to run the school is not far short of the 'normal' number. If just a few can't get in (and as I said, many will not live on the doorstep) then it becomes non-viable. And quite a few schools are placed so that school buses can't get in either if there is snow. There is more than one reason for a school to close, despite what the tabloids like to spout.