The government have said that school must close to all children except the children of Key Workers. However:

“If children can stay safely at home, they should, to limit the chance of the virus spreading. That is why the government has asked parents to keep their children at home, wherever possible, and asked schools to remain open only for those children who absolutely need to attend.” – gov.uk

This means that even if you are a key worker, if you are able keep your children at home, you should.

Thank you.