The DfE has instructed schools to follow the guidance given by the Department of Health and Public Health England.

Please visit this link for the latest Government advice about the Coronavirus.
https://www.gov.uk/government/publications/guidance-to-educational-settings-about-covid-19/guidance-to-educational-settings-about-covid-19

There is a lot of information here, including :

People who have returned from Category 1 specified countries/areas in the last 14 days should self-isolate. This includes avoiding attending an education setting or work until 14 days after they return. They should call NHS 111 to inform of recent travel.

People who have returned from Category 2 specified countries/areas in the last 14 days, are advised to stay at self-isolate if they develop symptoms. They should call NHS 111 to inform of recent travel.

All other pupils or students and staff should continue to attend school or university, including their siblings attending the same or a different school (unless advised not to by public health officials).

We will continue to monitor the situation very closely and, of course, will keep parents/carers in touch of any changes to the procedure.