Teachers will have to make sure that children from one class do not mix with another when schools start to go back in Andalucía from 10 September.
All schools controlled by the Andalusian Education authority will have a designated Covid-19 coordinator overseeing measures and alerting of possible cases. However the headteachers' association has said it is worried that too much responsibility for overseeing rules is being given to teachers.
In the new guidelines from the regional government, schools are free to choose staggered start and end times for classes. Inside classrooms, pupils won't need to socially distance and can work or play freely.
Staff and children over six will need to wear a mask at all times, unless the activity makes it impossible to do so. Teachers will also be asked to take more subjects with the same group to avoid too many changeovers.
If positive coronavirus cases are found, the education authority can lock down one or more classes, with lessons carrying on remotely via video conference.
The Junta de Andalucía is planning on bringing 8,000 more staff into schools from next term, including 6,300 teachers, and has stressed that it wants to give schools as much support as possible to adjust to the new normal.
The head of the headteachers' association, Virginia Rodríguez, said that she would have preferred classroom space and the number of teachers to be doubled instead, and reducing occupancy by half.