The ministers did not reassure teachers that it was safe to reopen at a meeting with the unions today.
And as it has been revealed that the rate of R infection is increasing, doctors have responded to the fears of teachers and the World Health Organization has declared that testing and contact tracing must be in place.
Liverpool are leading the revolt, telling parents that the children will not be back until June 15.
Plans are on the brink of collapse as teachers and city leaders prepare to challenge the Prime Minister’s calendar.
Teacher unions have warned that government evidence that school reopening is safe is “at best fragile.”
The British Medical Association has said that ministers should not consider reopening schools until the number of coronavirus cases is “much lower”.
And the World Health Organization has urged the UK not to lift the lockdown without looking for contacts in place.
They urged caution as it was revealed that the R number had gone from 0.5 to 0.7 on Sunday, when Prime Minister Johnson said restrictions could ease, from 0.7 to 1.
The R value is a measure of the rate of spread of the virus.
Parents in Liverpool today received a letter warning them that they should not expect schools to reopen on June 1.
Mayor Joe Anderson said he “is not going to take any chances with the lives of children or with the lives of teaching staff and professionals.”
Welsh Prime Minister Mark Drakeford said, “We will not be bringing new cohorts of children to school on June 1. “
After meeting with union leaders, Secretary of Education Gavin Williamson sought to reassure people that the schools had the support they needed.
He said, “It is vital to bring children back to school. “
But NASUWT secretary general Dr. Patrick Roach said, “Nothing at the meeting reassured the deeply worried and anxious school staff. “
BMA President Dr. Chaand Nagpaul wrote to Kevin Courtney, deputy secretary general of the National Education Union, commending the union’s caution and saying that the evidence for the schools’ reopening was “contradictory.”
As schools across Europe began to reopen with the distance in place, high school teacher Adam Boxer, 29, said that any safety advice was not practical.
He said, “It’s great to say that you should keep your children socially distant as much as possible, but anyone who works with six-year-olds knows it’s not really on the cards. “
At briefing No10, the deputy chief medical officer of England, Dr Jenny Harries, said that small schools were unlikely to have infected pupils.
She said, “In a school with about 100 children, the probability of someone having the disease is very low and decreases over time.”
Health Secretary Matt Hancock declined to say whether the chiefs who decided the risk to teachers and staff was too great would face reprisal.
He said, “The risk to children is much, much lower than to anyone.
“This means that we can offer to follow this route of reopening the schools.”
But WHO Special Envoy Dr. David Nabarro told the BBC that the ability to “test, track and isolate” was vital before the restrictions were lifted.
The test campaign was described as a “mess”, with only 1,500 of the 18,000 contact tracers named at the start of the week.
Deaths increased from 384 yesterday to 33,998, with 236,711 people tested positive Friday morning.
Number 10 yesterday confirmed that some parts of the country could be released from the lock-up before others after modeling suggested that London only has 24 new cases a day, compared to 4,320 in North East and Yorkshire .
Steve Chalke of the Oasis Trust, which has 35 elementary schools, said that he would accept students from June 1, insisting that children as young as five were “very good” in matters of social distancing.
Unlimited outdoor exercise must be allowed, with the previous rule “once a day” removed
People will be allowed to sit on parks and beaches, provided they stay within two meters of other people
Boris Johnson said in his speech on Sunday evening that people will be able to drive to other destinations starting on Wednesday, presumably to exercise there, although more detailed plans are likely to follow.
Starting May 13, people will be able to meet a friend or relative from another household in a public place, as long as they stay within two meters of each other. Meetings of more than two people are prohibited, so that people cannot meet their two parents, for example
Play golf and tennis
Golf courses and tennis courts will reopen from May 13, with social distancing relatively easy to achieve, although you can only play with people in your household. Team sports such as football are not likely to be encouraged, as social distance is difficult and more people than the average household would be needed
Fishing and swimming
Fishing and water sports should also be allowed to resume in England from Wednesday. Again, you must be in your own home and two meters from other people
Back to work
Rather than changing the rules, the government is now encouraging people to return to work if they cannot do it from home. But they also encourage people to drive, walk or bike to work rather than using public transportation, if possible
Professor Saul Faust, an infectious disease expert at the University of Southampton, said: “Society must reopen.
Primary school officials in England plan to introduce one-way systems, smaller classrooms and half-days to separate young children.
Springfield Elementary School in Derby closed for 14 days after confirmation of two cases of coronavirus.