coronavirus cases, a teachers’ union has warned. Boris Johnson previously pledged that all pupils at both primary and secondary schools in England will return in September, following months of closures for the majority of students.But after the Prime Minister announced a slowing down in easing the lockdown restrictions, Patrick Roach, general secretary of the NASUWT teaching union, said the government will need to provide “clarification” to schools.Mr Roach told the Observer: “In light of recent changes to plans for relaxing lockdown measures, the government needs to provide greater clarity to school leaders, teachers and parents about what this will mean for the reopening of schools in September.”A warning from England's Chief Medical.