The teachers needed in most schools to do the "bubbles" is at least double what they already have. If it's a two form year, you may need 4 bubbles, so double teachers. Oh and then there is the class rooms!
How do you think schools will magically make this happen???
Some schools are staying shut except key worker children as that's all they can take.
Some schools will take one or two year groups, because they can.
Some schools (not many I'm guessing) will take all that they can back).
If your child goes back they will not be with friends, in their own class or with their teacher. This is childcare because the government said they need to open.
Let's stop bashing schools and teachers, and moaning because your child has a T.A. I'm not even a teacher nor do I work in a school, but I realise the difficulties the schools are facing.