I would be expecting them to mandate use of masks, and maybe send the pupils home at lunchtime so they don't have to remove masks en masse to eat.
Sending kids home to eat or even P/T while easy for my kids may be really hard for some pupils and school where they bus in.
Where I grew up and the school I went to is same as DN - and it school buses one in morning one in evening. The commercial buses don't go anywhere near the right location. Used to have to go in and wait around for exams.
So image what they can do with have to be unique to the actual school.
Having said that our primary school before lock down was staggering breaks, eating in class room, and no school assemblies while the seconday school was still doing muli year group assemblies and as numbers dropped was closing rooms and canteen spaces, with muli year groups, in meaning remaining pupils were actually in smaller rooms even more squashed in.
As a result I have much more faith in prmary school handling getting back than the secondary.
At my uni we are being told to expect to do online learning in the autumn with students on campus from 2021.
DH been told the same at the minute however I'm not sure how many would choose to start this Sepember like that rather than defer a year.