To those asking about hand washing at school, I'm a teacher (part time, don't work on Monday).
We had official advise last week on hand washing before eating, after going to the loo and after playtime and PE lessons. I spoke to my class about washing hands properly, including fingertips, base of thumbs etc.
After play we all hung our coats up then had a squirt of hand sanitizer each before going to sit down.
I was also very careful not to panic the children, as I teach KS1 and year 3. I just talked about not wanting to catch coughs and colds.