Almost a quarter of pupils in England were out of school last week, according to the latest official attendance figures showing the impact of Covid.
In secondary schools, the absence rate was nearer a third of pupils, while in primaries it was 17%.
Elaine Blowers and her family in Hampshire are among many affected by having to self isolate.
She says each time it happens she worries about the mental health of her daughter Gracie and son Harley.
There were 1.7m pupils out of school, up from 1.5m the week before – with the latest figures including over 1m off because of Covid-related reasons, although only 47,000 were confirmed as positive cases.
There were also about a further 661,500 pupils out of school for non-Covid related reasons.
These figures show a snapshot of the situation in school last Thursday – before changes introduced from 19 July, which are intended to reduce the numbers having to be sent home.
Mrs Blowers, a mum of two young, primary-aged children in Andover told how both her children had to isolate due to one person in their class testing positive. Both children did a PCR test and they were Covid-negative.
Her son, Harley, has special needs and has missed out on the additional help he gets in school and has not really got on well with home-learning.
He has been slapping his own face in distress, she says.
And she explained how her daughter, Gracie, always experiences anxiety every time she has to isolate – developing nightmares and stomach pains.
She said: “What is frustrating is that it is not the first time this has happened, every time we have always been negative and felt very frustrated that my children have had to be locked up and I’ve had to lose an income unnecessarily.”
Elaine runs her own business as a childminder working from home, so every time her children need to isolate, it impacts her business.
She said the current situation was tricky for parents.
“I know some parents have approached schools to keep children off so not to affect holidays. But other parents are still choosing to keep children in school.
“We’ve stuck to the rules but begrudgingly.”
Elaine says both her children have really suffered by not being in school. “The prime minister needs to get a grip and allow for people that are contacted to get a PCR test and if negative return to work or school. This needs to change now – 16 August is too late,” she says, referring to the date when Covid self-isolation rules are expected to change.
“It is having such a negative impact on businesses and peoples (including children’s) mental health.”