admitted not all schools would be able to fully reopen, even in September. Teaching unions, who had been critical of the Government’s approach to returning children to school, said it would be pleased Boris Johnson “will not force the impossible”.The National Association of Head Teachers had previously said returning all pupils before the end of term would be “unsolvable practical barriers if the hierarchies of control are to be maintained”.It said in a statement: “Schools will continue to use their flexibilities intelligently to deliver the very best for all their pupils in their schools.”The Government has said pupils and teachers will be tested for coronavirus as it attempts to persuade parents to send their children to school.