The call comes as staff prepare for the part-time return of S1-6 students from March 15. Most are currently learning remotely in a bid to contain the spread of Covid-19. Plans for the next phase of re-opening Scotland's education system - which will also see P4-7 pupils go back full-time - were announced earlier this week by Nicola Sturgeon. READ MORE: The First Minister said they were based on continued declines in infection rates, test positivity and hospital admissions. But with schools set to host pupils in significantly greater numbers, the Government faces growing pressure to strengthen guidance aimed at keeping classrooms and corridors safe.