She is accused of grooming underage girls for the late paedophile Jeffrey Epstein and lying about it.
Measures will ensure learning in England is not "knocked off course", the education secretary says.
Boris Johnson will make the appeal to the public ahead of rule changes and reopenings on Saturday.
Ninety-one sites will close immediately with the loss of around 1,900 jobs.
UK government sources indicate that UK tourists will not have to isolate on return from up to 75 countries.