crystal I have to disagree with you, in our school, teachers plan all intervention groups run by TAs in loose terms, TAs then assess and plan for individuals accordingly, and we teachers monitor their impact half termly, at the very least.
Teachers plan work to suit all abilities, often four ways if nec, to allow children to work independently. I work with my support group really often too!
Also (year 1) my children are expected to work independently unless they have been targeted for a specific reason, ie a guided group focusing on a certain skill. And this group could be made up of 1 child or 8 or any umber inbetween depending on what the gap in their learning is.
Our school's TAs are so brilliant. And we have lots of children with very complex behavioural needs so could not manage a class on our own as so many need a one to one to help them cope with school (not statemented so no funding there!).
My TA supports my vulnerable children on the carpet so they can access the quality first teaching, she models behavioural expectations, models how to work with a partner with me, as well as assessing constantly and making notes for me.
If anyone tries to take my amazing, patient and dedicated TA I will hold onto their legs and be dragged round with them until they give her back.