So I'm wondering the opposite - are GL going to have to reduce the content level in their real 11 plus maths tests in order to fit them with the year 5 national curriculum as children take the test at the start of the year 6 so it's only the year 5 curriculum that should be tested in the state sector, arguably, as the state sector does not prepare for the 11 plus and the new curriculum is heralded with the principle of broadening sideways rather than advancing up the years in content for the ones that are "exceeding expectations".
It is rather odd, indeed. I have not read the curriculum document, so can't comment on that, but in a recent 'maths evening' for parents in our primary we were told that the expectations have shifted and the new curriculum is significantly more demanding than the old one - not just in maths, but across all subjects.
I'm not sure the level of content in the real maths tests would go down, especially given that schools are largely free to create their own papers (at least as far as I am aware). My youngest has just done the first round of the grammar tests and from what he told me, there were a number of questions there that he hadn't covered at school yet. Demand for selective school places is increasing, so from the schools' point of view, it probably doesn't make sense for the tests to be easier.
It's true that 11+ exams are supposed to take into account that children have just come out of year 5, but they don't. Comprehension, for instance, is way above what year 6 children usually do at school. The texts are much harder to read and questions are more difficult to answer. Also, bear in mind that a fair proportion of grammar schools' intake comes from prep schools and based on conversations with a few people I know who have children in private schools, they seem to be a year or two ahead of state primaries in what they do.
I was very naïve with my eldest and believed headmasters' speeches during open evenings. They said any child expected to achieve level 5 at the end of school was a good grammar school material. DS had level 6 in maths and English in his SATs but didn't make it to a grammar school and neither did 2 or 3 of his friends with levels 6.
With my youngest, I don't believe a word of what they say and have been teaching him maths ahead of what he did at school. He has got through to stage 2 tests and passed for one of the schools which uses only stage 1 results for their shortlist.
I think it all boils down to a rather vague phrase that 'tests are based on KS2 curriculum'. It all depends on how we are supposed to interpret the 'based on' bit...