And yes, primary schools I know are incredibly strict about bubbles and distancing. My son in yr 1 told me, matter of factly, he got told off for touching his friends desk with his back the other day.
But this simply isn't possible in many many schools, including primary.
We have class bubbles ideally but the reality is that the three classes within each year group are mixing daily to some extent.
Our classes have at least 2 children per double table. In some rooms it is necessary to have 3. We can't separate these tables out so they are touching the tab,Ed next to them. Therefore each child automatically has at least 2 other children sat immediately next to them, shoulder to shoulder.
We don't have the playground space to separate class bubbles, therefore the whole of a year group - 3 classes - are playing out together at the same time. We keep year groups separate where possible, yet they use the same playground one after another,
We don't have enough toilet blocks for one per bubble. Whole year groups use the same toilets as a minimum that's 90 children using one small toilet block, with 3 toilets and two sinks.
Reception don't have individual table space. They are sharing toys and equipment all day, wherever possible this is restricted to their one class but due to the open plan nature of our building this isn't always possible.
Staggered starts and finishes are minimally possible as we have so many children with siblings in the same school or the attached junior school. It just simply didn't work. At least parents are wearing masks.
An old Victorian school has many narrow corridors and pinch points. These are impossible to change right now without major work.
We have staff who work across classes and year groups. We've tried to reduce this as much as possible, and mostly this is just within a year group now - though that kicked in after 2/3 of the staff were off with covid and after all 9 classes had needed to isolate at least once. Sometimes it's not possible to prevent though, especially where there are low staff numbers due to illness or isolation. Once you add supply teachers and TAs this also has an impact on those bubbles.
We are now allowed to wear masks within the classroom if we wish, though this isn't publicised. We were told we'd be able to do so when returning in September but that changed and we were advised not to. After so many ended up ill the]is has changed. We have had increased anti bac sprays added around school and we have the windows open. Some rooms are freezing but it's one of the only mitigation's we have available to us.
Sadly covid did get into our school. We ended up with about 3/4 staff testing positive, many parents and some children, aged 4-7y testing positive. Not many children were actually being tested at the time due to not having the key 3 symptoms. Recently parents have started testing for other symptoms now based on what those with positive children have told them.