For goodness sakes. It's perfectly obvious why the government isn't advising social distancing in schools. And it's perfectly obvious why schools are trying to social distance where possible. What I don't understand is the mentality of the moaners on here.
So when schools didn't shut at the start of the Coronavirus outbreak, parents were signing petitions and pulling their kids out of school left, right and centre. Utter outrage and accusations of the government not caring about the children.
Then lockdown happened and after two weeks at home with their dc many parents started realising that actually being at home wasn't a holiday after all, which coincided with the realisation that it's hard work teaching your own children, especially when working from home, and that they wanted to get back to work because it's easier than dealing with their own dc each day. They then started demanding schools open because the children were missing half a year of education (even though it had only been 10 days). Teachers were apparently having a jolly at home in the sun when really they actually should be sacrificing themselves for the youth of today on a pyre of SATs papers and ancient old computers...plus the teachers needed punishment for having long unpaid holidays and a jammy job babysitting children for 6 hours a day.
Then the government decided that they were still following the science but not really, and decided schools should open from 1st June and that social distancing was no longer required for children or the adults working in those schools...but only during the hours of 9am to 3.30pm. Outside of those hours the virus could attack and kill at any point. Apparently the school buildings are so well built that they are like a fortress to the 'rona and teachers/tas/cleaners/kitchen staff etc are immune to the virus whilst inside but as soon as they put a foot outside the school perimeter...bam! The virus gets 'em. So everyone in the whole land must social distance apart from school staff and children because the virus is terrified of the word "school" and flees at the merest mention of it.
So unions weren't convinced by this science, and decided to speak to the government because they wanted to ensure that their members were safe. They wanted the government to help come up with a plan to protect those who work in schools. So then many parents started getting the arse about that because how dare school staff want to be protected as much as possible from the virus that the science tells us (and that we've been following) can be dangerous to people of a certain age, certain physique, those with certain illnesses...because we all know that everyone who works in education is aged 20-30, slim and healthy as an ox.
Now schools are gradually coming up with some form of plan to open again and people still have the arse because they want school staff to take greater risks than many would be prepared to take themselves (and just because you might be happy swanning around in public and breathing in other people's germs doesn't mean that teaching staff have to feel the same) because teachers are lazy and have long unpaid holidays so they must be punished by having extra doses of Coronavirus coughed into their faces.
So to answer your question, OP, schools are attempting to social distance because that is the common sense approach given the current situation. The government want as many people back to work as possible and they are ignoring common sense to do this. Fortunately the schools are using their brains and are doing their best to protect staff, children and all related families from the virus.
As you can tell, I am sick to the back teeth of the government only following science when it's suits them, allowing the most vulnerable members of our society to perish dreadfully by allowing the virus to spread like wildfire amongst those in care homes, and I'm sick of people constantly blaming all manner of evils on teachers and schools. And no, I'm not a teacher.