then we moved it forward to November half term because teaching proper mixed ability [Y7] was such a nightmare.
Just coming back to this one, because I would ask again 'What happens over the 6 week summer holiday to make this impossible?'
Whether primaries teach with 'ability tables', or teach whole class with differentiated support, or whatever, 'teaching proper mixed ability' in Maths is what virtually every primary teacher does, every day of every term of their lives.
Obviously we do it for every other subject too.
What is it about the 6 week holiday between Y6 and Y7 that makes impossible for secondary teachers - subject specialists, at that - not to be able to do what everyone expects primary teachers to 'just do' every day?
Nobe, in general, I agree with what you write about Maths. I have two able children who are / were set in Maths [DS's A-level class isn't set, but the entry requirement was a 7, so it is restricted both by ability and inclination. However, i genuinely don't understand what uis so different about Y7 students after a 6 week holiday from the Y6 students they were at the end of July, such that subject specialists find it a nightmare to teach mixed ability groups.
I would agree with the points made by others above that that is a teaching problem, not a grouping problem. The approaches you use for teaching sets higher in the school may not work perfectly for mixed ability - but primary teachers do exactly that job, very successfully: does that make the task 'a nightmare', or simply that the teaching approach needs tweaking?#
I suspect the different marking cultures in primary and secondary may be one factor, though. In primary, IME, all books are marked between every lesson in the same subject - so that means any misconceptions are immediately picked up and re-grouping or support can happen in the next lesson. Marking cycles are much longer in secondary, so that loop can't be closed as fast.