Now if we leave Secondary Schools out of the equation (assuming that kids over 11 can look after themselves at home until their parents return from work) we are left with the problem of a Primary School closing. This is almost always due to not having the minimum legal number of teachers per pupil and it brings absolute havoc because of course, one parent must then stay at home to look after a child between 4 and 11. Either the parent or their employer must bear this cost, which is huge and completely unnecessary.
The solution is simple and obvious. Every teacher should register with the Primary school nearest to them and make their way there (with photo ID) if they are unable to get to their own school. Pre registering would do away with any identification/CRB check excuses and if there are still problems with teacher numbers then they can be sorted out well in advance. All that is needed is to keep the children occupied for the day and if the primary schools drew up a bad weather program in advance, then it's perfectly straightforward. Teachers would be hailed as saving the day rather than sleeping the day.
Why is this not done? Councils can't be bothered and the Teachers Unions would come up with some utterly farcical objections. Why not do the decent thing and ask your nearest Primary school if you can help out on the big day? (Remember though, a snowman competition is no longer allowed due to the all-white nature of the entries)