That means children will still be mixing with others, and are more at risk of catching Covid-19.
From today, groups of more than six people are banned in England, but educational settings are exempt.
With winter approaching children are not just at risk of catching coronavirus, but also flu or the common cold. Now parents are being urged to learn the difference
But this isn’t necessary if the child is just displaying symptoms of normal flu or the common cold.
With children being back at school, it’s even more important to be aware of the symptoms of coronavirus.
As winter approaches there will no doubt be a rise in cases of flu and colds – which share similar symptoms to Covid-19.
If a child tests positive for coronavirus, they need to be taken out of school, with fellow pupils and teachers forced to self-isolate.
Some of the symptoms are similar with all three, so it can be hard to know which is which.
Now parents are being urged to learn how to spot the difference between coronavirus, flu and cold symptoms.
Most people with coronavirus have at least one of these symptoms.
The main symptoms of coronavirus are a high temperature, a new, continuous cough or a loss, or change to sense of smell or taste.
Other symptoms include a headache, difficulty sleeping, loss of appetite, tummy pain or feeling sick.
Flu symptoms can include a sudden fever, aching body, feeling tired or exhausted, a dry cough and a sore throat.
Meanwhile, cold symptoms can include a blocked or runny nose, sore throat, headaches, muscle aches, coughing, raised temperature and sneezing.
People may can also expect loss or taste and smell and pressure in ears.
Dr Ravi Tomar, GP at the Portland Medical Practice in Croydon, told the Metro: “The challenge with these upper respiratory infections is that that can all present with symptoms such as a cough, sore throat, aches and pain.
“However the predominating symptoms can help to differentiate between each.