Almost 90% of teachers fear social distancing will be impossible when children return to school this week and many admit they are suffering from 'extreme anxiety' over the new term

As many schools prepare to begin the new term tomorrow, most teachers still have serious safety concerns, a poll suggests.

Staff are suffering from 'extreme anxiety' and almost nine out of ten believe social distancing will prove to be impossible.

Under-threat Education Secretary Gavin Williamson has staked his future on the full return of schools, after overseeing the exams fiasco that unfairly graded thousands.

But the survey of nearly 6,000 school staff found that more than a third felt the Government's approach to safety 'won't work' and will leave them 'at risk'.

Teachers are suffering from 'severe anxiety' ahead of the new term beginning tomorrow, with most staff still having safety concerns. Pictures, Manor High School in Leicestershire

And 28 per cent of staff said they may not comply with the test and trace system if there is a coronavirus outbreak at their school, because they do not trust the Government with their data.

According to the poll by the Times Educational Supplement, 88 per cent of school staff in England said they lack confidence in the ability of the test and trace policy to make school openings safe.

But heads' union leader Geoff Barton said that although there 'will be lapses from time to time', safety procedures 'will improve' as pupils and teachers get used to them.

The Department for Education has also been criticised for releasing important contingency plans for virus-hit schools late on Friday night. 

But it said that under the new guidance no further measures needed to be introduced before the term starts. 

Labour's shadow education secretary Kate Green said the guidelines were 'long overdue', while Paul Whiteman, boss of heads' union the NAHT, said the timing was 'reprehensible'.

'It was obvious weeks ago that lockdown advice was necessary', he said.

Under-threat Education Secretary Gavin Williamson has staked his future on the full return of schools, after overseeing the exams fiasco that unfairly graded thousands

The Department for Education said the new guidance outlines how schools in virus-hit areas will operate on a four-tier system.

All schools remain open at tier one, while a tier two response will see secondary schools move to a rota system, which means pupils will spend two weeks on-site followed by two weeks at home.

Tiers three and four mean more stringent restrictions such as closures to all but pupils in vulnerable groups or children of key workers.

One respondent told the TES how hygiene measures put an 'enormous responsibility on staff'.

'Everyone is working extra hours and the constantly changing advice is extremely stressful'.

'Our cleaning staff have expressed extreme anxiety at having the children's and staff's health in their hands.'

And a deputy head commented: 'I have seen staff too close to pupils when helping them learn and some children are too close physically. A consistent safe distance is not achievable.'

One teacher said: 'We have four classes using one set of toilets. Robust hand washing will be a huge issue.'

A teaching assistant added: 'When staff have to move between classes having multiple start times will become tricky and staff will inevitably be late to lessons. This will lead to some children taking advantage and causing disruption.'

A poll found 88 per cent of staff said they lack confidence in the ability of the test and trace policy to make schools safe. Pictured, pupils return to Manor High School in Leicestershire

Friday's guidance also detailed how, if an infection is confirmed, schools contact a health protection team, who confirm who was in close contact and ask them to quarantine for 14 days.

But adding to the confusion, the document was amended shortly after it was published, removing guidance that said entire 'bubbles' of pupils may need to self-isolate.

Mr Whiteman added: 'Inevitably, there will be anxieties. These are unprecedented and unusual times. Despite all the safety measures that are being put in place, anxiety is entirely understandable.'

A Department for Education spokesman said: 'Schools have had our Public Health England-endorsed guidance on full school reopening since the start of July, and teachers and school leaders and staff have been working hard to put these measures in place so all children can return for the autumn term. The latest updates provide additional information to support schools as they welcome all children back.'