KEY workers are being asked to avoid sending their children to school if possible as Leeds faces a "critical" situation after an increase in Covid-19 infection rates last week.

The appeal is being made by Leeds City Council after rates rose to 316 per 100,000 last week compared to 290 a week earlier. The infection rate in over 60s rose to 216.8.

Concern is growing nationally over the number of pupils in school during lockdown, with attendance rates surging by up to 50 per cent in some place, with fears the high numbers attending could hamper the fight against the virus.

Leeds City Council is asking critical workers to avoid sending their children to school if it is possible to keep them at home.

A letter, signed by Executive Member for Learning and Skills Councillor Jonathan Pryor and Director, Children and Families Saleem Tariq, is being sent out by schools.

It says: "As you know, the country has entered a third lockdown and schools have closed for everyone except the children of critical workers and vulnerable children. The purpose of the lockdown is to reduce contact and therefore reduce the infection rate of Covid-19. Our message to you is clear: the best action for you to take for your child, yourself and the whole community is to keep your child at home if it is safe to do so.

"We are at a critical situation in Leeds."

It adds: "For some of you, we understand that your work is of critical importance that your child absolutely has to be in school. However, if you qualify as a critical worker, but can manage to have your children at home, please do this, and let your school know. Government guidance published on 7th January reinforces this point. It says 'Parents and carers who are critical workers should keep their children at

home if they can.'

"Government guidance also says that there should be a place for all children of critical workers 'who need to attend.' We know that many of you are in families where both parents are involved in frontline work that takes you out of the house and where your work is essential in the fight against Covid-19. Where this is not the case, it would greatly help our schools and our local effort if those children stayed at home and accessed the school’s remote learning offer."

A national survey shows that nearly half of headteachers in England have had to prioritise school places among children of key workers and vulnerable pupils due to high demand during lockdown.

More than a third of school leaders say they had 31 per cent or more of their normal roll attend school in person on Thursday, according to a poll by the National Association of Head Teachers (NAHT).

One in ten heads say they had 41-60 per cent of their pupils come into school amid the new lockdown, the figures suggest.

The Government’s “confused” message to parents on school attendance risks defeating the national aim of suppressing the virus, the leader of the NAHT has warned.

Pupils in schools and colleges in England – except children of key workers and vulnerable pupils – have been told to learn remotely until mid-February due to tighter restrictions.

Department for Education (DfE) guidance says schools should not limit the number of children of key workers or vulnerable pupils on-site during lockdown, and only one parent needs to be a critical worker for their child to attend class – even if parents are working from home.

But it also says parents who are critical workers should keep their children at home “if they can”.

The NAHT is calling on the Government to tell heads how many pupils on-site is “too many” as it says high pupil attendance could “seriously undermine” the impact of lockdown and risk longer closures.

Nearly three in four (74%) school leaders say demand for places has “greatly increased” compared to the lockdown in March last year, according to a survey shared with the PA news agency.

Nearly half (48%) say they have had to prioritise places for children of key workers or vulnerable pupils in their school “due to an excess of demand”.

The survey, of 4,964 school leaders in England, comes amid reports of councils and schools seeking to prioritise places for parents who are both key workers, or who work in emergency life-saving services.

Education Secretary Gavin Williamson confirmed to MPs last week that children who do not have access to technology are seen as vulnerable and can attend school in-person during lockdown.

EU transition workers have also been added to the list of parents who are eligible for school places.

The survey found nearly two in five (38%) had 21-30% of their usual cohort attend last week, while 22% had 31-40% of their roll in school. More than one in 10 (12%) had more than 41% of pupils in.

On the high attendance figures, NAHT general secretary Paul Whiteman said: “In these circumstances it is understandable why quite so many parents with children at home are questioning, with some degree of frustration, why their children are being asked to stay at home when so many aren’t.”

He added: “This situation is incredibly difficult for parents. The increase in demand for places compared to the national lockdown last March is very concerning.

“It is critical that school places for the children of key workers are only used when absolutely necessary in order to reduce the numbers in school and stem the spread of the virus.”

Government guidance says vulnerable children may include “pupils who may have difficulty engaging with remote education at home” due to a lack of devices or quiet space to study.

Nearly two in five (37%) heads, questioned on Thursday, said 1-10% of all the pupils who attended school came in as a result of vulnerability due to a lack of devices or quiet space.

But the majority (53%) of school leaders said they had no children attend specifically for this reason.

Mr Whiteman said: “The government must be clear on what it intends schools and families to do. If the national priority is to suppress the virus then it must provide schools with clear guidance so that reasonable levels of attendance can be set.”

He added: “At present, the government’s confused message to parents on school attendance risks defeating the national aim of suppressing the virus.”

The Children’s Task and Finish Group, which reports to the Scientific Advisory Group for Emergencies (Sage), published a report in December when schools were fully open to all pupils saying “accumulating evidence is consistent with increased transmission occurring amongst school children when schools are open, particularly in children of secondary school age”.

It said it was “difficult to quantify the size of this effect, and it remains difficult to quantify the level of transmission taking place specifically within schools compared to other settings”.

A separate Schools Infection Study from Public Health England (PHE), the Office for National Statistics (ONS) and the London School of Hygiene & Tropical Medicine (LSHTM), also published in December, found there were similar levels of infection in schools as in the community.

Teachers and pupils from 105 primary and secondary schools were tested at the peak of the second wave in November when they did not have any coronavirus symptoms – which means they were tracked in a normal daily school environment.

The findings showed that 1.24% of pupils and 1.29% of staff overall tested positive for current infection – similar to the 1.2% reported in the community.

A DfE spokeswoman said: “Schools are open for vulnerable children and the children of critical workers. We expect schools to work with families to ensure all critical worker children are given access to a place if this is required.

“If critical workers can work from home and look after their children at the same time then they should do so, but otherwise this provision is in place to enable them to provide vital services.

“The protective measures that schools have been following throughout the autumn terms remain in place to help protect staff and students, while the national lockdown helps reduce transmission in the wider community.”