Prior to that, secondary pupils and staff only had to wear face masks when moving about within the school and on school buses. They were encouraged to social distance “where possible” but there were no formal distancing rules for pupils.
One-way systems were introduced in corridors and physical contact including hugging and high-fiving was ruled out.
Schools across Scotland have been closed to the vast majority of pupils since the Christmas holidays, with learning being done at home and online.
The first children back in school on 22 February are expected to be all pupils in P1-P3 as well as pre-school children.
There will also be a part-time return, but on a very limited basis, for senior secondary pupils to allow them to complete work for national qualifications.
Only between 5% and 8% of a secondary school’s pupil roll will be able to be present at any one time.
First Minister Nicola Sturgeon has stressed that the reopening of schools was dependent on the continued suppression of coronavirus.