At least seven schools in England have sent pupils home to self-isolate due to students catching coronavirus within days of the start of term.
Primary and secondary schools in Greater Manchester, Yorkshire, Leicestershire, Lancashire and Buckinghamshire have all been stricken by the virus - seven sending pupils home and another delaying the start of term.
Notable among them is Sir William Borlase's Grammar School in Marlow, Bucks, which delayed yesterday's start of term after 20 pupils tested positive for Covid-19 after returning from a party holiday to the Greek island of Zante.
One of the grammar school's pupils caused outrage last night after a TikTok video emerged of him joking about the group's lack of social distancing and mask wearing on the trip.
The King David High School in Crumspall, Greater Manchester (pictured), which has spent £21,000 on implementing the requisite provisions and technology to allow for social distancing and self-isolating
One of Sir William Borlase's Grammar School's pupils caused outrage last night after a TikTok video emerged of him joking about the group's lack of social distancing and mask wearing on the trip
Today it emerged that another seven schools – which unlike Sir William Borlase's had already started term – have asked pupils to go home, some after just hours back in the classroom.
A coronavirus outbreak at a school is defined as two or more confirmed cases within 14 days - or if there is a spike in the numbers off school with symptoms.
The school must work with local health officials as a result.
If the outbreak is confirmed an NHS mobile testing unit could be dispatched.
Testing will start with the infected pupil's class and the entire school may be swabbed if necessary.
In some instances, a large group such as an entire class or set will be asked to self-isolate.
The Government says that closing schools will 'not generally be necessary.'
If a pupil is self-isolating, schools are supposed to have made provisions so that they can learn at home.
Thousands of pupils in England and Wales have begun returning to classrooms this week, with the remainder due to open their doors next week.
Among them, the King David High School in Crumspall, Greater Manchester, which has spent £21,000 on implementing the requisite provisions and technology to allow for social distancing and self-isolating.
The secondary school resumed teaching for sixth-formers and the new Year 7 intake last Friday.
But one of the older pupils began feeling unwell and developed a temperature that very evening and he tested positive on Sunday.
Three pupils who were within two metres of the child are now having to self-isolate for 14 days.
Dixons Trinity Academy, a middle school, and Dixons King's Academy, the secondary school, in Bradford have asked some pupils and staff to self-isolate, The Daily Mirror reported.
It comes after two members of staff and one pupil tested positive for the virus since the academies restarted last Tuesday.
The Ridgeway Primary Academy in Market Harborough, Leicestershire, went back last Friday but it was discovered over the weekend that one pupil aged between five and seven had tested positive for the virus.
As a result that pupil has been asked to self-isolate for 10 days and several others who came into close contact with the child have been asked to self-isolate for 14 days.
An unnamed school in Whitworth, Lancashire, was also said to have sent pupils back home to self-isolate on Thursday.